USER MANUAL: Nikon Speedy-K (ARK) Autorefractor/Keratometer
D023-6E December.2008(1/2) Thank you for purchasing this Righton product. This instruction manual is written for users of the Righton "Auto Refract-keratometer Speedy-K." To ensure correct usage read this manual carefully before operating the instrument. · It is prohibited to alter this manual in part or whole without expressed permission. · The contents of this manual are subject to change without any notice. · Although every effort has been made to ensure the accuracy of this manual, if you note any points that are unclear or incorrect, contact your nearest Righton representative. · Note that despite the above, Righton does not bear any responsibility for any claim over loss due to the use of this instrument. Caution Symbol in This Manual Though Righton products are designed to provide you utmost safety during use, incorrect usage or disregard of the instructions can cause personal injury or property damage. For your safety, read the instruction manual carefully and thoroughly before usage. Do not discard this manual but keep it near the product for easy reference. Inside this instruction manual, safety instructions are indicated with the symbol shown below. Be sure to follow the instructions marked with this symbol for your safety. Symbol Meaning CAUTION Disregarding instructions marked with this symbol may lead to injury or property damage. Meaning of Symbol on the Instruments Cover and Nameplate AC power OFF (cut off from power supply) Fuse ON (connected to power supply) Caution: Please refer to instruction manual. Input and Output Type B equipment Symbol for separate collection in European countries Products bearing this symbol must be collected separately. The following rule is applicable only to users in European countries. This product is designated as an item to be collected separately at an appropriate spot. Do not dispose of it as household waste. For further information, contact the retailer or the local authorities responsible for waste management. 1 Please Read This First for Your Safety. 1 CAUTION Intended Use Only use the Auto Refract-keratometer Speedy-K for measuring the refractive power of the eye and curvature of the cornea. Do not use this instrument for any other purpose. 2 CAUTION Do Not Disassemble Disassembling this instrument may lead to electric shock and/or malfunction of the instrument. Never disassemble this instrument. 3 CAUTION During Measurement Operations · Particularly in the case of little children, take care that patients do not put their fingers in the moving parts of this instrument. · Take care that the measuring head does not strike the patient's nose. (When moving the measuring head toward the patient or toward the patient's left or right eye.) 2 4 CAUTION During Installation and Transportation Be absolutely sure to support the instrument as shown in the figure at left during transportation. Do not carry the instrument by the forehead rest, measuring head or joystick lever. · Recommended operational conditions are an air pressure of 800 to 1060 hPa, a temperature of approximately 10C to 35C, and a relative humidity of 30 to 70%. · The environmental requirements for transport and storage are -40 to +70 in temperature and 10% to 95% in humidity. · Although the instrument is dust-proof, do not use it in a room where there is a lot of dust or dirt. · The best place for installation is a dimly lit room. Do not face the patient side of the instrument toward a bright window or source of light. · Although this instrument conforms to EMC standards (IEC60601-1-2:2001), it does emit a weak electromagnetic signal. If use of this instrument affects other equipment such as televisions or radios, separate it from the affected devices or change the direction it faces. · When transporting this instrument, always be sure to first tighten its securing screws. ( P.8) · Since this instrument is not water-proof in construction, never take it into locations where liquids such as rain or beverages may get inside. · If condensation (dew) forms, do not use the instrument until the condensation disappears. 5 CAUTION Other Notes on Handling · Always use a specified power cord that is rated for the voltage used in your area and that has been approved under local safety standards. Using the wrong power cord could result in damage or fire. For 100 V 120 V area : UL listed, detachable cord set, 3 conductor grounding type SVT, No. 18 AWG rated at 125 V, 7 A minimum. For 230 V area : 3-pole power supply cord set, which must be approved according to EU/EN standards. · Do not scratch, break or alter the power cord or overly bend, pull, twist or bundle it. Also, placing heavy objects on the power cord or subjecting it to heat may cause it to break, resulting in fire or electric shock. If the power cord becomes damaged, be sure to replace it with a new cord. 3 · If there is any dust on the power plug blades or the surface they connect to, pull out the power plug and remove the dust. The dust or grime can make the power plug and AC power outlet to be out of contact and may result in fire. · This refractometer is a precision optical instrument containing many electronic components. Be sure to handle it carefully and do not subject it to strong physical shock. 6 CAUTION Maintenance and Storage · The specified transportation and storage environment is a temperature of 10°C to 45°C and relative humidity of 20 to 85%. · When replacing a fuse, be sure to turn off the power switch and pull out the power cord. Be sure to use only a fuse of the specified rating. Electric shock or fire may occur if a fuse other than of the specified rating is used. (Specified fuse: time lag fuse T1AL/250V, SCHURTER 0034.3117) ( P.45) · Measurement results are adversely affected if the measuring window glass surface becomes soiled with grease from the patient's nose, fingerprints or dust. Be sure to always keep the measurement window glass clean. When cleaning the measurement window glass, take care not to scratch or break it. ( P.37) · When finished using the instrument, turn off the power switch and cover it with its plastic cover. OFF · The internal battery The instrument includes a primary lithium battery as the power source for the clock function and all setting functions stored in memory. If the battery goes out, the time and date printed on the measurement printout will be wrong. Also, settings will not be stored in memory and default settings will be restored every time the power is turned off. Contact your nearest Righton representative when replacing batteries. · Disposing of the unit If you dispose of the unit, be sure to follow the local regulations regarding the disposal of products containing lithium batteries. Equipment Supplied Main unit, power cord, plastic cover, blower, spare fuse, transport securing screw hole caps (2), handy clamp screw, printer paper (5 rolls), model eye for inspection, Philips screwdriver, and instruction manual (this booklet) 4 Contents Caution Symbol Used in this Manual ...................................................................................... 1 Symbols on the Instrument's Cover and Nameplate ............................................................. 1 Please Read This First For Your Safety .................................................................................. 2 Equipment Supplied .................................................................................................................. 4 Nomenclature ......................................................................................................................... 6 Preparation ............................................................................................................................. 8 2-1 Setting Up the Speedy-K ................................................................................................ 8 2-2 Measuring the Model Eye ............................................................................................. 10 2-3 Checking Settings ......................................................................................................... 11 Measurement Method .......................................................................................................... 12 Measurement Screen ....................................................................................................... 12 Description of Test to Patient Before Measuring ............................................................. 13 Measurement Modes and RK Modes of the Unit ........................................................... 13 3-1 Auto Measurement Mode .............................................................................................. 15 3-2 Continuous Measurement Mode ................................................................................... 18 3-3 Manual Measurement Mode ......................................................................................... 19 3-4 Quick Measurement Mode ............................................................................................ 20 3-5 Printing .......................................................................................................................... 21 3-6 Miscellaneous ............................................................................................................... 24 Automatic Fogging / IOL Patients / When Keratometry Measurement is Impossible / Measuring a Hard Contact Lens Base Curve / Error Messages / Representative Values for Refraction and Keratometry Measurements / Refraction Confidence Values / Storing Measured Values / Automatic Power Conservation Retro Mode ............................................................................................................................ 28 Making Various Settings (Setup) ........................................................................................ 29 Connecting to External Devices ......................................................................................... 43 Maintenance .......................................................................................................................... 44 7-1 Checking Measurement Accuracy ................................................................................ 44 7-2 Replacing a Printer Paper Roll ..................................................................................... 44 7-3 Changing the Fuses ...................................................................................................... 45 7-4 Cleaning the Chin and Forehead Rests ....................................................................... 46 7-5 Cleaning the Measurement Window ............................................................................. 46 7-6 Cleaning the Model Eye ................................................................................................ 46 7-7 Cleaning the Painted Components ............................................................................... 46 Troubleshooting ................................................................................................................... 47 Specifications ....................................................................................................................... 48 5 Nomenclature Infrared signal generator Sends a signal to an Auto Optester "Remote Vision". TV monitor Enables the operator to take measurements while monitoring the patient's eye on the TV monitor. Measurement data is also displayed on the monitor. FUNCTION keys Press to enter various setup modes and retro mode. SET key Press to enter a given setup screen. POWER lamp Lights when the power switch is set to ON. PRINT key Press to print out data. Printouts are made automatically in auto measurement mode. ( P.21) Measurement switch Press to start measurements. It is not necessary to press this switch in auto measurement mode or continuous measurement mode. Joystick lever Used for right/left and forward/ backward positioning during measurement. Printer cover Open in the following cases: · To change the printer paper roll · To adjust the TV monitor's brightness or contrast. 6 Measuring head Houses the measuring mechanism. Transport securing screw hole A securing screw can be tightened to protect equipment from vibration and shock during transport. Remove this screw after installing this instrument and store it in the storage compartment (2). Re-tighten the screw whenever moving the equipment. ( P.8) The handy clamp screw is screwed into this screw hole. ( P.9) Fuse holder Contains the fuse. ( P.45) RS-232C interface connector Used when connecting to external devices. ( P.43) Input power cord Connect to an AC power outlet. Input power cord socket Plug the power cord into this socket. Power switch Power is ON when " " side is pressed and OFF when " " side is pressed. Model eye mounting holes Insert the model eye's pins into these holes. Forehead rest The patient's forehead rests against these pads. Measuring window Show the target in this window to the patient. Chin rest Place the patient's chin here. Chin rest paper can also be used for cleanliness. ( P.8) Chin rest height adjustment knob Turn to move the chin rest up or down. ( P.15) Transport securing screw hole A securing screw is tightened to protect equipment from vibration and shock during transport. Remove this screw after installing this instrument and store it in the storage compartment (1). Re-tighten the screw whenever moving the equipment. ( P.8) Storage for transport securing screws (1, 2) Printer paper (When the printer's cover is opened) 1. Nomenclature Height mark Height guide ring Adjust the height of the patient's eyes to these rings. ( P.15) Sliding seat Target line for sliding seat ( P.15) Video signal output connector Used when connecting to an external video equipment. Brightness control knob Turn to adjust the brightness of the TV monitor screen. Contrast control knob Turn to adjust the contrast of the TV monitor screen. 7 Preparation 2 - 1 Setting Up the Speedy-K 1 Place the unit on a stable table (such as a power table). 2 Remove the two transport securing screws using the Philips screwdriver. Cover the screw holes with the caps provided. Store the two securing screws in the storage compartment to the left of the printer. ( P.7) Always be sure to tighten the securing screws when transporting the unit. 3 Plug the input power cord into the unit's input power cord socket. 4 Plug the other end of the input power cord into an AC power outlet. 5 Turn the unit's power switch ON. The POWER lamp will light, the TV monitor screen will brighten, and the unit can now make measurements. 6 Insert a printer paper roll. ( P.44) 7 Clean the forehead rests and chin rest with disinfectant alcohol. When using chin rest paper (sold separately), pull up the two chin rest pins and hook the chin rest paper between them. Use of a thickness of about 5 mm of chin rest paper is appropriate. 8 2. Preparation Using the handy clamp screw When setting the instrument on the adjustable table (such as the double table), clamp the right, left, fore and backward movement of the sliding seat by screwing in the handy clamp screw. Remove the provided cap of the transport securing screw hole from the instrument. Screw in the handy clamp screw holding the knurled part, till the screw cannot be turned further. To clamp the right, left, fore and backward movement: Push in the top of the screw and turn right. To release the clamp: Turn left till the top of the screw pops up. Handy clamp screw 9 2 - 2 Measuring the Model Eye 1 Insert the model eye's two pins into the model eye mounting holes in the forehead rest part. 2 Check the VD value on the TV monitor. (120V: 13.75, 230V: 12.0) 3 Using the joystick lever, align the target with the model eye. (For details on the measurement method, refer to P.12 to 27.) 4 Compare the measured values for the model eye with the values (SPH, CYL and R) listed on the label attached to the model eye and check that the difference in values all fall within the following corresponding ranges. SPH : ±0.25D CYL : ±0.25D R1 : ±0.02mm R2 : ±0.02mm T : ±0.05mm N : ±0.05mm S : ±0.05mm I : ±0.05mm If either value is not within the above range, refer to "3 Measurement Method" (P.12 to 27) and check that the measurement method is correct and then re-measure. Next, refer to "7-5 Cleaning the Measurement Window" and "7-6 Cleaning the Model Eye" (P.46) under "7 Maintenance" and clean these parts if they are dirty. If either value still is not within the above range, please contact your nearest Righton representative. 10 2. Preparation 2 - 3 Checking Settings Factory settings are as follows. For details on the meaning of settings or on how to change settings, refer to "5 Making Various Settings (Setup)" (P.29 to 42). Measurement mode setting AUTO Fixation chart brightness setting H Patient No. setting 00001 PRINT setting: AUTO PRINT ON PRINT setting: REF PRINT ALL PRINT setting: KERATO PRINT REP PRINT setting: MESSAGE OFF RK ORDER setting REF setting: CYL (astigmatism sign) 120V: RK, R, K, RKP, KP KEEP ON 230V: RK, RKP, R, K, KP KEEP ON (Minus) REF setting: STEP (minimum unit) AUTO REF setting: FRAME VD KER setting: mm/D (unit of measure) 120V: 13.75 230V: 12.00 mm KER setting: INDEX 1.3375 KER setting: KERATO TRANS (transmission setting) OFF Buzzer setting: SOUND ON Date display format Time display format Print message 120V: MDY 230V: DMY 120V: AM/PM 230V: 24H Blank RV IR ID setting OFF RS-232C setting OFF Word setting EG 11 Measurement Method Measurement Screen The figure below is an example of a screen during measurement in RKP Mode. Cornea radius curvature (NASAL) Cornea radius curvature (TEMPORAL) Cornea radius curvature (flattest meridian) R1 axis angle Auto fogging mark Mire ring Light spot Alignment mark Keratometry measuring light Fixation chart brightness Left/right eye display Mark indicating measuring underway Patient No. T 9.12 N 9.12 R1 9.12 A1 180 S 9.12 I 9.12 R2 9.12 A2 90 R 05 / L 05 RKP H R 08 / L 08 R 00001 VD 12.0 / PD64 S 12.00 C 6.00 A180 A RK /1 RETRO /2 A-C-M V D /3 QUICK /4 SET Cornea radius curvature (SUPERIOR) Cornea radius curvature (INFERIOR) R2 axis angle Cornea radius curvature (steepest meridian) Left/right keratometry measurement count RK mode Left/right refraction measurement count VD setting value/ PD value Measurement mode A Auto measurement mode C Continuous measurement mode M Manual measurement mode Q Quick measurement mode SSpherical power C Cylindrical power ACylindrical axis SET key POWER FUNCTION keys PRINT PRINT key RK /1 Switches RK mode RK RKP R K KP RK... ( P.14, 34 35) RETRO/2 Enters retro mode ( P.28) V D /3 A-C-M QUICK /4 Changes fixation chart brightness (press a short time) H L H... Changes the VD value (press a long time) 12.0/13.75 0.0 12.0/13.75... Switches the measurement mode Auto Continuous Manual Quick Auto... ( P.14 20) 12 3. Measurement Method Description of Test to Patient Before Measuring Most patients will be rather nervous, so try to put them at ease. Briefly explain the unit's operation and purpose to the patient. · "This machine determines the power of the spectacle lenses you should use." · "You will see a green field inside. Please relax and look at the tree target in the center." · "Try to keep your eye as still as possible." Measurement Modes and RK Modes of the Unit This unit possesses four measurement modes and five RK modes. Select the measurement mode and RK mode according to the description given in "5-1. Measurement Mode Screens" ( P.30) under "5. Making Various Settings (Setup)". The table on the next page gives the operation performed when each mode is selected. 13 RK Mode Measurement Mode Auto measurement mode ( P.15) Measurements are made automatically with the unit determining all operations from the beginning to the end. When the light spot enters the alignment mark, the measurement starts. The unit determines the cause of fluctuations in the measured values and the measurement ends. If AUTO PRINT is ON, a printout is made, when measurements for the left and right eyes are completed. RK Mode Auto start Keratometry measurement (One measurement/ center) Refraction measurement (5 measurements min.) Auto stop Auto print (Only when AUTO PRINT is ON) R Mode Auto start Refraction measurement (5 measurements min.) Auto stop Auto print (Only when AUTO PRINT is ON) K Mode KP Mode Auto start Auto start Keratometry Keratometry measurement measurement (One measurement/ (One measurement/ center) center and periphery) Auto stop Auto stop Auto print (Only when AUTO Auto print PRINT is ON) (Only when AUTO PRINT is ON) RKP Mode Auto start Keratometry measurement (One measurement/ center and periphery) Refraction measurement (5 measurements min.) Auto stop Auto print (Only when AUTO PRINT is ON) Continuous measurement mode ( P.18) Although measurements are started automatically in the same way as auto measurement mode, measurements do not end automatically but are made continuously. Pressing the measurement switch will stop measurement momentarily. Pressing it again will restart measurement. Press the PRINT key to print out measured data. Auto start The following set is performed continuously: Keratometry measurement (One measurement/ center) Refraction measurement (5 measurements) Auto start Refraction measurement (Continuous measurements) Auto start Keratometry measurement (One measurement/ center) Auto start Keratometry measurement (One measurement/ center and periphery) Auto start The following set is performed continuously: Keratometry measurement (One measurement/ center and periphery) Refraction measurement (5 measurements) Manual measurement mode ( P.19) Measurement is not performed until the tester presses the measurement switch. When the light spot enters the alignment mark and the image comes into focus, press the measurement switch and the unit will take one measurement. Holding the switch down will continue taking measurements. Press the PRINT key to print out measured data. Measurement Measurement Measurement Measurement Measurement switch ON switch ON switch ON switch ON switch ON Keratometry Refraction Keratometry Keratometry Keratometry measurement (One measurement/ center) Refraction measurement (One measurement) measurement (One measurement) measurement measurement (One measurement/ (One measurement/ center) center and periphery) When the measure- When the measure- When the measure- measurement (One measurement/ center and periphery) Refraction measurement (One measurement) When the measurement ment switch is held ment switch is held ment switch is held When the measurement switch is held down, this down, this is the down, this is the down, this is the switch is held down, this is the same as continuous same as continuous same as continuous same as continuous is the same as continuous measurement mode. measurement mode. measurement mode. measurement mode. measurement mode. Quick measurement mode ( P.20) This is the same as continuous measurement mode except that refraction measurements take about half the time. The length of time required for keratometry measurement does not change in this mode. Auto start The following set is performed continuously: Keratometry measurement (One measurement /center) Quick refraction measurement (5 measurements) Auto start Refraction quick measurement (Continuous measurements) Auto start Keratometry measurement (One measurement/ center) Auto start Keratometry measurement (One measurement/ center and periphery) Auto start The following set is performed continuously: Keratometry measurement (One measurement/ center and periphery) Quick refraction measurement (5 measurements) 14 3. Measurement Method 3 - 1 Auto Measurement Mode 1 Press A-C-M QUICK /4 and set the measurement mode to A. 2 Press RK /1 and select the RK mode. The following description is for when the RK mode selected is RK . The measurements made (refraction measurement, keratometry center measurement, keratometry peripheral measurement) differ for each RK mode. For details on the measurements made in each RK mode, see the previous page. 3 Show the patient where to sit. Ask the patient to rest both hands on the lap. Adjust the height of the table or chair so the patient is comfortable. 4 Turn the chin rest height adjustment knob, and align the patient's eyes with the height guide ring. 5 Fit the patient's forehead to the forehead rest and rest the patient's chin firmly on the chin rest. d If the chin is not firmly in place, accurate measurement is not possible. 6 Move the joystick lever to position the measuring head so that the patient's eye is displayed on the screen. Once the patient's eye first appears on the screen, bring the image of the pupil to The following operations allow you to find the patient's eye easily the center of the screen. (You may measure either eye first). Turn: Moves vertically. Tilt to left/right: Moves to left/right. Tilt to back/forth: Moves to back/forth. Movement of the joystick lever and the measuring head motion For vertical direction: Align the head height mark with the height guide ring located on the chin rest bar. For lateral direction: Align the edge of the sliding seat with the target line on the base. 15 7 Before putting the light spot inside the alignment mark, move the joystick lever back and forth to focus the mire ring. Keratometry measuring lights R1 A1 R2 A2 R 00 / L 00 RK H R 00001 S R 00 / L 00 VD 12.0 / PD C A A Alignment mark Pupil image Mire ring 8 Once the mire ring is in focus, move the joystick to fine adjust the vertical and horizontal position to align the light spot with the center of the mire ring. Light spot R1 A1 R2 A2 R 00 / L 00 RK Alignment mark Pupil image H R 00001 S R 00 / L 00 VD 12.0 / PD C A A Mire ring 9 When the light spot enters the alignment mark, a " " mark will appear indicating that Auto Fogging is activated. If the light spot and mire ring are not clearly in focus, fine adjust by moving the joystick back and forth to achieve focus of the light spot and mire ring. Light spot R1 A1 R2 A2 R 00 / L 00 RK Auto fogging mark Alignment mark H R 00001 S R 00 / L 00 VD 12.0 / PD C A A CAUTION Be careful not to bump the measuring head against the patient's nose when moving the unit left or right. (It is safe to move the unit left or right after first pulling it forward.) 16 3. Measurement Method 10 When the " " disappears, measurement will start automatically. The unit will determine the cause of fluctuations in the measured values and will automatically end the measurement when measured values stabilize. The display on the TV monitor will be as in the figure below. (The figure is an example after the right eye has been measured.) If you want to re-measure the right eye, press the measurement switch again at this point. R1 9.12 A1 180 R2 9.12 A2 90 R 01 / L 00 R OK RK H R 00001 S 3.25 R 05 / L 00 VD 12.0 / PD C 0.62 A159 A 11 Move the unit left or right and perform steps 6 through 10 for measuring the other eye. If the AUTO PRINT setting is ON, the unit will automatically print out the measurement results once the measurement is finished. ( P.21) (The figure is an example of the TV screen during printing.) KR R1 7.80 L R1 9.12 A1 154 R2 7.63 A2 64 A1 180 R2 9.12 A2 90 R 05 / L 05 PRINTING RK 001/PD64 R 3.25 0.62 159 10 L 2.00 0.50 44 10 Keratometry measurement value PD values, representative refraction values for the left and right eyes and the confidence values After both eyes have been measured, the patient's PD value (pupil distance in mm) will be calculated. You may not obtain an accurate PD value in the following cases. · The patient's head moved during measurement. · The binocular function of the patient is not good. If there is any foreign matter (such as opacity in the crystalline lens caused by cataract, other opacity or scratches) obstructing the light from entering the pupil during measurement, it will appear as a black shadow. If there are any black shadows, observe the pupil in retro illumination mode ( P.28) and proceed to further examination of the eye using the slit lamp. 17 3 - 2 Continuous Measurement Mode 1 Press A-C-M QUICK /4 and set the measurement mode to C. 2 Press RK /1 and select the RK mode. 3 Measure the patient's eyes using the same steps 3 through 10 as given in "3-1 Auto Measurement Mode". d In this mode, measurement does not end automatically, rather it is continuous. d Be sure to measure each eye at least five times. Increase the number of measurements even more if there are fluctuations in the measured values or lots of eye movement. Up to eight refraction and keratometry measurement results can be stored per eye. 4 Press the measurement switch when you want to end measurement for a given eye. (The alignment mark will blink and measurement will stop temporarily.) 5 Measure the other eye in the same way. 6 Press the PRINT key when you want to print out the measurement results. ( P.21) 18 3. Measurement Method 3 - 3 Manual Measurement Mode 1 Press A-C-M QUICK /4 and set the measurement mode to M. 2 Press RK /1 and select the RK mode. 3 Position the measuring head versus the patient's eye using the same steps 3 through 8 as given in "3-1. Auto Measurement Mode". d In this mode, Auto Fogging does not activate even when the light spot enters the alignment mark. 4 If the light spot and mire ring are not clearly in focus, fine adjust by moving the joystick back and forth to achieve focus of the light spot and mire ring. At this time, the fixation chart will automatically move slightly away from the far point of the patient's eye and an OK mark ( OK ) will appear. R1 A1 R2 A2 R 00 / L 00 OK RK H R 00001 S R 00 / L 00 VD 12.0 / PD C A M OK mark 5 Press the measurement switch when the OK mark ( OK ) appears. Auto Fogging will activate at this point and the patient's eye will be measured. d Be sure to take refraction measurements for each eye at least five times. Continuous measurement is possible by holding down the measurement switch. Up to eight refraction and keratometry measurement results can be stored per eye. 6 Measure the other eye in the same way. 7 Press the PRINT key when you want to print out the measurement results. ( P.21) 19 3 - 4 Quick Measurement Mode Quick Measurement Mode with shortened refraction measurement times is useful such as when measurement is difficult due to quick motion of the eye in the case of an infant or nystagmus. d Although the refraction measurement time in this mode is reduced to about half of the usual time, fluctuations in measured values may increase greatly. d The length of time required for keratometry measurement does not change in Quick Mode. d Do not use this mode under normal conditions. d A "Q" is printed on the print paper to indicate Quick Measurement Mode. R1 A1 R2 A2 R 00 / L 00 RK H R 00001 S R 00 / L 00 VD 12.0 / PD C A Q 1 Press A-C-M QUICK /4 and set the measurement mode to Q. 2 Press RK /1 and select the RK mode. (Keratometry measurement is not available in Quick Measurement Mode.) 3 Position the measuring head versus the patient's eye using the same steps 3 through 10 as given in "3-1. Auto Measurement Mode". d In this mode, measurement does not stop automatically. Measurement is continuous. d Be sure to take quick refraction measurements for each eye at least five times. Increase the number of measurements even more if there are fluctuations in the refraction measurement values or lots of eye movement. Up to eight refraction and keratometry measurement results can be stored per eye. 4 Press the measurement switch to end measurements for a given eye. (The alignment mark will blink and measurement will stop temporarily.) 5 Measure the other eye in the same way. 6 Press the PRINT key when you want to print out the measurement results. ( P.21) 20 3. Measurement Method 3 - 5 Printing 1 In Auto Measurement Mode, if the AUTO PRINT setting is set to ON, measurement results are printed automatically after measurements are completed. In Continuous or Manual Measurement Mode, or when the AUTO PRINT setting is set to OFF, press the PRINT key to obtain a printout. Communications with external devices conform to the communications settings made. ( P.43) Data is printed according to user settings. ( P.33) d The unit prints out only the measured results for the last eight measurement cycles for both refraction and keratometry measurements of each eye. (Five cycles for each eye in Auto Measurement Mode.) d Measurement cannot be performed during printout. d If Auto Print is set to OFF, a screen like that shown below will appear after both eyes have been measured. (Example during Auto Measurement) R1 9.12 A1 180 R2 9.12 A2 90 R 01 / L 00 RL OK RK H R 00001 S 3.25 R 05 / L 06 VD 12.0 / PD C 0.62 A159 A 2 The printed paper will come out of the unit. Tear off the paper by pulling upward. 21 Example of Printed Data Patient's No. Cornea vertex distance Pupil distance Measured refraction values (right eye) Representative refraction values (right eye) Measured refraction values (left eye) Representative refraction values (left eye) Measured keratometry values (right eye) Representative keratometry values (right eye) No. 00113 Name: '02. 4. 9 11:27 AM Date and time of measurement User settings in this example: VD:12.0 PD:67.0 -REF- [R] SPH - 2.50 - 2.50 - 2.50 - 2.62 - 2.50 - 2.50 - 2.50 - 2.50 CYL - 1.12 - 1.12 - 1.12 - 0.87 - 1.00 - 1.00 - 1.12 - 1.00 CHART:H AX 114 114 115 113 114 114 114 114 Fixation chart brightness REF PRINT: ALL KER PRINT: ALL MESSAGE: ON TIME SETTING: 12-hour display RK Mode: RKP - 2.50 - 1.00 114 10 Right eye refraction confidence value (S + C / 2 = - 3.00) Spherical equivalent for right eye [L] SPH CYL AX - 1.87 - 0.87 52 - 1.87 - 0.87 54 - 1.87 - 0.87 54 [L] R1 R2 AX1 AX2 - 1.87 - 0.87 53 8.44 8.14 40 130 - 1.75 - 0.87 53 Measured keratometry 8.44 8.14 40 130 - 1.87 - 1.87 - 0.87 51 - 0.87 53 values (left eye) 8.45 8.13 40 130 8.44 8.14 40 130 - 1.87 - 0.87 53 - 1.87 - 0.87 53 10 (S + C / 2 = - 2.25) -KER[R] R1 R2 AX1 AX2 Left eye refraction confidence value Spherical equivalent for left eye 8.45 8.14 40 130 8.44 8.14 40 130 8.45 8.14 40 130 8.44 8.14 40 130 - 8.44 8.14 40 130 mm D deg 8.38 8.12 42 132 8.37 8.13 41 131 8.39 8.12 42 132 Representative keratometry values R1 8.44 40.00 41 R2 8.14 41.50 131 AV 8.29 40.75 8.40 8.14 43 133 (left eye) CYL - 1.25 8.39 8.12 42 132 8.38 8.13 41 131 8.37 8.12 42 132 Right eye horizontal -KER (PERI)- [R] mm D 8.37 8.12 42 132 center measurement H 7.95 42.50 - 8.38 8.13 41 131 value V 7.79 43.37 mm R1 8.36 R2 8.13 AV 8.26 CYL D deg 40.25 41 41.50 131 40.87 - 1.25 41 Right eye vertical center measurement value PERI (25° ) mm T 7.96 N 8.03 D 42.37 42.00 S 7.99 42.25 I 8.02 42.12 E (H ) = 0.267 Right eye eccentricity E (V ) = 0.606 This value is used for comparing the central curvature versus the peripheral curvature. The meaning is as follows. Left eye horizontal center measurement values E (AV) = 0.461 [L] H V mm D 7.89 47.75 7.71 43.75 · About 0.5 is normal. Left eye vertical · The eye approaches a spherical shape as this value approaches 0. · Peripheral sagging is higher as this value approaches 1. center measurement values PERI (25°) mm T 7.90 N 7.92 S 7.94 D 42.75 42.62 42.50 Use this information as a reference I 8.00 42.25 when selecting contact lenses. Left eye eccentricity E (H ) = 0.190 E (V ) = 0.673 E (AV) = 0.499 Radius curvature during right eye periphery measurement (tangential direction) Refractive power of cornea (right eye periphery measurement) Radius curvature during left eye periphery measurement (tangential direction) Refractive power of cornea (left eye periphery Message area RIGHTON SPEEDY-K RIGHTON SPEEDY-K NIKON SPEEDY-K measurement) 22 3. Measurement Method 3 Press the PRINT key again if after printing you want to re-print (or resend) the data or if you want to make an eye print. The following screen will appear. PUSH JOYSTICK TO EXIT PRINT SEND PRINT/SEND EYEPRINT · Pressing RK /1 will re-print the measured results. · Pressing RETRO/2 will resend the data. ( P.43) · Pressing V D /3 will re-print and resend the data. ( P.43) · Pressing A-C-M QUICK /4 will make an eye print. Example of Eye Print Data No. 00113 '02. 4. 9 11:27AM Name: VD:12.0 PD:67.0 CHART:H [R] SPH CYL AX - 2.50 - 1.00 114 10 [L] SPH CYL AX - 1.87 - 0.87 53 10 AUTOREFRACTOKERATOMETER SPEEDYK 23 4 After printing, the following screen will appear if the RV IR ID setting (infrared transmission setting when there is more than one Auto Optester) is "SELECT". ( P.39) Select the ID number of the Righton Auto Optester "Remote Vision" you want to send the data. PRESS UNIT No. PUSH JOYSTICK TO EXIT 1 2 3 4 · Pressing RK /1 will send data to the Remote Vision with Unit No. "1". · Pressing RETRO/2 will send data to the Remote Vision with Unit No. "2". · Pressing V D /3 will send data to the Remote Vision with Unit No. "3". · Pressing A-C-M QUICK /4 will send data to the Remote Vision with Unit No. "4". For details on setting the unit number for Righton Auto Optester "Remote Vision", please refer to the Remote Vision instruction manual. 3 - 6 Miscellaneous Automatic Fogging The auto fogging mechanism aids measurement by facilitating patient eye fixation and minimizing eye accommodation. In Auto Measurement or Continuous Measurement Mode, a mark will appear on the monitor screen and auto fogging will be automatically activated when the light spot enters the alignment mark. When auto fogging ends, the mark will disappear and measurement will automatically start. In Manual Measurement Mode, pressing the measurement switch after the OK mark ( OK ) appears will activate auto fogging and measurement will be performed. IOL Patients This unit can measure IOL patient using the same procedure as normal eyes without any switching of switches. When measuring patients with Intra Ocular Lens (IOL), this unit may display differing measurements or show a low consistency value as a result of noise that is caused by reflections due to the nature or conditions of the IOL. 24 3. Measurement Method When Keratometry Measurement is Impossible When keratometry measurement is impossible, particularly when peripheral keratometry measurement is impossible, check that the eyelashes or eyelids are not blocking the measuring light. Have the patient open their eyes wide so that the measuring light is not blocked and then take the measurement. During refraction-keratometry or keratometry measurement, keratometry measuring lights will appear on the patient's cornea and can be seen on the TV monitor. (The diagram on the right depicts RKP Mode.) If these keratometry measuring lights cannot be seen, can only be partially seen, or appear hazy, the measuring light is being blocked. This may be due to blocking by the eyelashes or eyelids, blinking or pathology of the cornea. If the nasal side (N) cannot be measured during peripheral keratometry measurement, check that the patient's face is facing straight-forward and that his or her nose is not blocking the measuring light. T N R1 A1 S I R2 A2 R 00 / L 00 RKP H R 00001 S R 00 / L 00 VD 12.0 / PD C A A Example of blocked keratometry measuring lights Measuring a Hard Contact Lens Base Curve (The base curve of a soft contact lens cannot be measured.) 1 Place several drops of water on the supplied hard contact lens holder. 2 Place the hard contact lens on the holder (to face the side to be measured toward the instrument). 3 Mount the supplied model eye onto the forehead rest. Hard contact lens holder With the lens attached, install the hard contact lens holder onto the model eye. 4 Take measurements using normal keratometry measurement procedures. 25 Error Messages The following table summarizes possible causes on the right when an error message appears on the screen. Methods of dealing with problems are given below the table. Error message AL ERR RK ERR REF ERR KER ERR Cause The optical axis of the unit is not aligned with the optical axis of the patient's eye. Refraction and keratometry measurement values cannot be obtained for some reason even though alignment has been established. This may be due to eyelashes, blinking, irregular astigmatism, cataracts, small pupils, etc. Refraction measurement values cannot be obtained for some reason even though alignment has been established. This may be due to eyelashes, blinking, irregular astigmatism, cataracts, small pupils, etc. Keratometry measurement values cannot be obtained for some reason even though alignment has been established. This may be due to eyelashes, blinking, irregular astigmatism, cataracts, small pupils, etc. · If an error message appears, align the light spot inside the alignment mark once more and press the measurement switch again. · If a patient has drooped eyelashes, it will be necessary to make the eyelashes stay out of the outer line on the alignment mark on the TV monitor screen. If necessary, have the patient or an assistant gently lift the eyelid with their fingertip. · In Manual Measurement Mode, it is good practice to press the measurement switch immediately after the patient blinks. · The unit automatically re-measures if the patient blinks during measurement. · The measurement may not be made if the patient is suffering from an eye disease such as a cataract, abnormal retina, opaque condition of the cornea, crystalline lens or vitreous body. · If the patient's pupil is highly reactive to brightness, the fixation chart brightness setting should be reduced and then the eye measured. ( P.30) The inner diameter of the mire ring is about 2.5 mm. · When <S+C> is outside the range -18 to +23D, or when <C> is outside the range -12 to +12D, measurement cannot be made. · Measurement with a contact lens on: Measurement is usually possible. However, if the contact lens is not properly fitted, the correct values may not be obtained. Any dirt or scratches on the contact lens surface may result in measurement failure. · Measurement with glasses on: Measurement is possible if the lens is tilted slightly. If the lens is tilted at too large an angle, correct values will not be obtained. Measurement may not be possible if light is reflected from the lens surface into the measuring window, or if the glasses have a colored lens of low transmission. 26 3. Measurement Method Representative Values for Refraction and Keratometry Measurements Representative values are a guide to help you choose which one of the several measured values for one eye to choose. An asterisk (*) indicates the representative values on a printout. For a sample printout, please see P.22. Consider the following points when selecting one value from several measured refraction values that vary widely. Substantial variance of SPH values The patient's eye may be accommodating. Re-measure the eye. Substantial variance of CYL and AX values AX will tend to be somewhat unstable when the eye is weak astigmatically (CYL value of less than 0.5D). Other causes may include the following. · Eyelashes are occluding the pupil. · The pupil diameter is less than the minimum measurable diameter of 2.5 mm. · Part of the eye is opaque or irregular astigmatically. Normally a low confidence value will be reported in the above situations. If the eyelashes or pupil diameter affect the measurement, you should re-measure the eye paying close attention to these factors. Refraction Confidence Values A confidence value indicates how widely measured results vary. It is only displayed when measurements are made three or more times and is printed at the right of printed results. For a sample printout, please see P.22. · 8 or higher: Variance is low · 7 or less: There is variance. Care is required in the handling of these measured results. Storing Measured Values This unit can only store the representative values of refraction measurements for up to 100 patients. If an excess of representative values are stored, the older data will be deleted. · In Auto Measurement Mode: Data is automatically stored after measurements for right and left eyes are complete. Press the PRINT key after completing one eye, if you want to store data for one eye only. · In Continuous or Manual Measurement Mode: Data is stored when the PRINT key is pressed after measurements for one or both eyes have been completed. The next measurement is possible after data has been stored. The patient No. will increase by one at this time. Automatic Power Conservation The unit will automatically enter power conservation mode if no switches or keys have been operated for three or more minutes. Press any key when you need to make measurements again. 27 Retro Mode Retro Mode allows you to observe the inside of a pupil more easily and to more readily understand measurement status when the measured values vary or when the confidence value is low. 1 Press the RETRO/2 key on the Measurement Mode screen. The unit will enter Retro Mode. In Retro Mode, fixation chart brightness is automatically switched to "L". RETRO OFF 2 Align the position of the measuring head with the patient's eye and focus the image if not already focused. If there is foreign matter obstructing the measuring light such as opacity in the crystalline lens, it will appear as a black shadow on the screen. RETRO OFF d · Foreign matter in the pupil may be more clearly seen if the image of the patient's eye is decentered slightly. In particular, an opacity at the center may not be visible. Direct the measuring light so that it is not obstructed by an opacity. · If an external illumination such as a fluorescent room lamp enters the patient's eye, foreign matter in the pupil may not be visible. Be sure that no external light enters the patient's eye. 3 Pressing the RETRO/2 key will cancel Retro Mode and resume the previous measurement mode. 28 Making Various Settings (Setup) The following settings can be made for this unit. R1 A1 R2 A2 R 00 / L 00 RK START No. No. : 12345 V D /3 H R 00001 S R 00 / L 00 VD 12.0 / PD C A A Measurement mode screen (see P.30) SET SETUP START No. : 12345 PRINT RK ORDER MEMORY (001/100) REF SETTING KERATO SETTING OTHER SETTING V D /3 SELECT EXIT SETUP screen (see P.30) PRINT AUTO PRINT : ON REF PRINT : ALL KER PRINT : ALL MESSAGE : ON 0123 4567 89R Patient No. input screen (see P.32) REF SETTING CYL : -- STEP : AUTO FRAME VD : 12.0 V D /3 SELECT EXIT REF SETTING screen (see P.37) KERATO SETTING V D /3 mm/D : mm INDEX : 1.3375 KERATO TRANS : ON SELECT EXIT PRINT setup screen (see P.33) SELECT EXIT KERATO SETTING screen (see P.38) V D /3 OTHER SETTING CLOCK : 02.12.12 : 12.32 am SOUND : OFF KEEP QUICK : OFF RS232C : NNKE RV IR ID : 1 WORD : EG EDIT MESSAGE AUTOREFRACTOKERATOMETER SPEEDY-K SELECT EXIT OTHER SETTING screen (see P.39) V D /3 RK ORDER 1 : RK 2 :R 3 :K 4 : RKP 5 : KP KEEP RK : ON SELECT EXIT RK ORDER screen (see P.34) MEMORY (001/100) PRINT ALL SEND ALL DELETE ALL V D /3 SELECT EXIT MEMORY output screen (see P.36) V D /3 CLOCK 02. 12. 12 12 : 32 am YEAR : 98 MONTH : 12 DAY : 12 HOUR : 12 MINUTE : 32 DATEFORM : YMD TIMEFORM : AM / PM + EXIT Time and date setting screen (see P.41) EDIT MESSAGE AUTOREFRACTOKERATOMETER SPEEDY-K V D /3 A B CDE F GHI J K L MN OP QR S T U V WX Y Z . - / 0123456789 ( ) # $ &? !%+ PUSH SET TO EXIT SELECT BS EDIT MESSAGE screen (see P.42) 29 5 - 1 Measurement Mode Screen R1 A1 R2 A2 R 00 / L 00 RK H R 00001 S R 00 / L 00 VD 12.0 / PD C A A "Select RK mode", "Enter retro mode", "Change fixation chart brightness", and "Change VD value" operations are performed on this screen. RK /1 : Selects the RK mode. RK RKP R K KP RK... RETRO/2 : Enters retro mode. ( P.28) V D /3 : Changes fixation chart brightness (press a short time). H (bright) L (dark) H (bright)... Changes the VD value (press a long time). 12.0 0.0 12.0... A-C-M QUICK /4 : Switches the measurement mode. Auto Continuous Manual Quick Auto... SET : Goes to the "SETUP Screen" (see below). 5 - 2 SETUP Screen SETUP START No. : 12345 PRINT RK ORDER MEMORY (001/100) REF SETTING KERATO SETTING OTHER SETTING SELECT EXIT The following settings can be made on the "SETUP screen". Use the RK /1 and RETRO/2 key to move the cursor to the item you want to set, and use the V D /3 key to select that item. Use the A-C-M QUICK /4 key to store the setting data and return to measure- ment mode. 30 5. Making Various Settings (Setup) Item Setting Description START NO. Pressing V D /3 when the cursor is at this item position will bring up the "Patient No. Input Screen". PRINT Pressing V D /3 when the cursor is at this item position will bring up the "PRINT Setup Screen". RK ORDER Pressing V D /3 when the cursor is at this item position will bring up the "RK ORDER Screen". MEMORY Pressing V D /3 when the cursor is at this item position will bring up the "MEMORY Output Screen". REF SETTING Pressing V D /3 when the cursor is at this item position will bring up the "REF SETTING Screen". KERATO SETTING Pressing V D /3 when the cursor is at this item position will bring up the "KERATO SETTING Screen". OTHER SETTING Pressing V D /3 when the cursor is at this item position will bring up the "OTHER SETTING Screen". 31 5 - 3 Patient No. Input Screen Pressing V D /3 on the "SETUP screen" when the cursor is at "START No." will bring up the "Patient No. input screen". Pressing a function key on this screen will display a "number input screen". Press the function key corresponding to the desired number to enter that number in the underlined field. START No. No. : 00001 Example setting: Entering the number "7" Press V D /3 : Goes to the "4567" input screen. Press A-C-M QUICK /4 : Inputs the number "7" in the underlined field. 0123 4567 89R RK /1 Moves the underline to the right RETRO/2 ................................... Goes to "0123" input screen Press the corresponding function key to enter 0, 1, 2 or 3. START No. No. : 00001 V D /3 ...................... Goes to "4567" input screen Press the corresponding function key to enter 4, 5, 6 or 7. 0 1 2 3 START No. No. : 00001 4 5 A-C-M QUICK /4 ......... Goes to "89 input and reset" screen Press the corresponding function key to enter 8 or 9 or to reset. 6 7 START No. No. : 00001 8 9 RESET · The underline will go down one digit each time a number is input. · To reset the patient No. to 00001, press the V D /3 key on the "89 input and reset" screen. · Pressing the SET key after setting all digits will return to the "SETUP screen". · Once a patient No. is set, all patient numbers will be automatically increased by "1" for subsequent measurements. · This screen is designed to enter the highest order digit first. 32 5. Making Various Settings (Setup) 5 - 4 Print Setup Screen Pressing V D /3 when the cursor is at the "PRINT" item position on the "SETUP Screen" will bring up the "PRINT Setup Screen". This screen is used to select print settings. Select setting contents by moving the cursor to the item you want to set and pressing the return to the "SETUP Screen". V D /3 key. Pressing A-C-M QUICK /4 will PRINT AUTO PRINT : ON REF PRINT : ALL KER PRINT : ALL MESSAGE : ON SELECT EXIT Auto print setting for Auto Measurement Mode: ON OFF ON... ON: Performs Auto Print during Auto Measurement Mode OFF: Does not perform Auto Print during Auto Measurement Mode. Print setting for measured refraction values: ALL REP OFF ALL... ALL: Prints measured values and representative values if there are measured refraction values. REP: Prints representative values if there are measured refraction values. OFF: Does not print. Print setting for measured keratometry values: ALL REP OFF ALL... ALL: Prints measured values and representative values if there are measured keratometry values. REP: Prints representative values if there are measured keratometry values. OFF: Does not print. Print setting for messages: ON OFF ON... ON: Print messages. OFF: Do not print messages. RK /1 : Moves the cursor down. RETRO/2 : Moves the cursor up. V D /3 : Selects setting contents for the item at the cursor position. A-C-M QUICK /4 : Returns to the "SETUP Screen". 33 5 - 5 RK ORDER Screen Pressing V D /3 when the cursor is at the "RK ORDER" position on the "SETUP Screen" will bring up the "RK ORDER Screen". This screen is used for the RK Mode Setting. d What is the RK Mode Setting? The unit switches to another RK mode when the RK /1 key is pressed while on the measurement screen. "RK Mode Setting" refers to the types of R-K modes which can be selected for measurement and their switching order. It is possible to set up to five modes. RK ORDER 1 : RK 2 :R 3 :K 4 : RKP 5 : KP KEEP RK : ON SELECT EXIT The figure above shows factory settings. RK /1 : Moves the cursor down. RETRO/2 : Moves the cursor up. V D /3 : Selects setting item at the cursor position. A-C-M QUICK /4 : Returns to the "SETUP Screen". The setting will change in the order RK R K RKP KP --- with every depression of V D /3 when the cursor is positioned at one of the locations 1 through 5. The cursor is moved using RK /1 or RETRO/2 . RK : After keratometry measurement (center), refraction measurements are made. R : Only refraction measurements are made. K : Only keratometry (center) measurements are made. RKP : After keratometry measurement (center and periphery), refraction measurements are made. KP : Keratometry measurements (center and periphery) are made. 34 5. Making Various Settings (Setup) Example: To set the RK Mode Setting to RK R K KP . RK ORDER 1 : RK 2 :R 3 :K 4 : KP 5 : --KEEP RK : ON SELECT EXIT Move the cursor to 1 using RK /1 and/or RETRO/2 , and select RK using Move the cursor to 2 using RK /1 and/or RETRO/2 , and select R using Move the cursor to 3 using RK /1 and/or RETRO/2 , and select K using Move the cursor to 4 using RK /1 and/or RETRO/2 , and select KP using Press A-C-M QUICK /4 and return to the "Setup Screen". V D /3 . V D /3 . V D /3 . V D /3 . d "KEEP RK" setting If "KEEP RK" is set to ON, the last RK mode selected will be restored when the power is turned on again. If "KEEP RK" is set to OFF, the mode assigned to the first mode given by the RK ORDER setting (among 1 to 5) will be restored when the power is turned on again. 35 5 - 6 Memory Output Screen Pressing V D /3 on the "SETUP screen" when the cursor is at "MEMORY" will bring up the "memory output screen". From this screen, it is possible to print, delete or send via RS-232C all past measured value data (for up to 100 patients) stored by the unit. · Data cannot be selected. · The number in parentheses next to "MEMORY" indicates the number of data entries currently stored. Position the cursor next to the desired item and press the V D /3 key to execute that function. MEMORY (001/100) PRINT ALL SEND ALL DELETE ALL Prints all stored data including representative values, dates, ID Nos. and so on in a list format. Sends all stored data to another device. Deletes all stored data. SELECT EXIT RK /1 : Moves the cursor down. RETRO/2 : Moves the cursor up. V D /3 : Selects setting contents for the item at the cursor position. A-C-M QUICK /4 : Returns to the "SETUP Screen". · A confirmation screen such as the following will appear if you attempt to execute "DELETE ALL". Press RK /1 (YES) to delete all data. Press RETRO/2 (NO) if you do not wish to delete all data. After this screen, the unit will return to "memory output screen". MEMORY (001/100) DELETE OK? YES NO 36 5. Making Various Settings (Setup) 5 - 7 Ref Setting Screen Pressing V D /3 when the cursor is at the "REF SETTING" item position on the "SETUP Screen" will bring up the "REF SETTING Screen". This screen is used to make refraction measurement settings. Move the cursor to the item you want to set and select settings using the Pressing A-C-M QUICK /4 will return to the "SETUP Screen". V D /3 key. REF SETTING CYL : -- STEP : AUTO FRAME VD : 12.0 SELECT EXIT Astigmatism sign setting: ± + ... : Minus display for astigmatism sign ±: Mixed display for astigmatism sign +: Plus display for astigmatism sign Measurement value (S, C) display step setting: AUTO 0.25 0.12 AUTO... AUTO: A 0.12D step is used to display the measured values within the range +/-3D. A 0.25D step is used to display the values outside this range. 0.25: 0.25D step 0.12: 0.12D step Corneal vertex distance setting: 12.013.513.7515.016.0012.0... RK /1 : Moves the cursor down. RETRO/2 : Moves the cursor up. V D /3 : Selects setting contents for the item at the cursor position. A-C-M QUICK /4 : Returns to the "SETUP Screen". 37 5 - 8 Kerato Setting Screen Pressing V D /3 when the cursor is at the "KERATO SETTING" item position on the "SETUP Screen" will bring up the "KERATO SETTING Screen". This screen is used to make keratometry measurement settings. Move the cursor to the item you want to set and select settings using the Pressing A-C-M QUICK /4 will return to the "SETUP Screen". V D /3 key. KERATO SETTING mm/D : mm INDEX : 1.3375 KERATO TRANS : ON SELECT EXIT Display unit setting: mm D mm... Setting for refractive power of the cornea during D conversion: 1.3375 (1.332) (1.336) 1.3375 Transmission setting for measured keratometry values: ON OFF ON... (This setting indicates whether or not measured keratometry values should also be sent when using RS-232C or infrared transmissions.) RK /1 : Moves the cursor down. RETRO/2 : Moves the cursor up. V D /3 : Selects setting contents for the item at the cursor position. A-C-M QUICK /4 : Returns to the "SETUP Screen". 5 - 9 OTHER SETTING Screen Pressing V D /3 on the "SETUP screen" when the cursor is at "OTHER SETTING" will bring up the "OTHER SETTING screen". From this screen, the following settings can be made. Move the cursor to the item you want to set and select settings using the V D /3 key. Pressing A-C-M QUICK /4 will return to the "SETUP Screen". OTHER SETTING CLOCK : 02.12.12 : 12.32 am SOUND : OFF KEEP QUICK : OFF RS232C : NNKE RV IR ID : 1 WORD : EG EDIT MESSAGE AUTOREFRACTOKERATOMETER SPEEDY-K SELECT EXIT 38 5. Making Various Settings (Setup) Item CLOCK SOUND KEEP QUICK RS-232C RV IR ID WORD EDIT MESSAGE Setting Description Available Selections Pressing V D /3 when the cursor is at this item position will bring up the "time and date setting screen". ( P.41) ------ Turns the sound ON/OFF. ON OFF ON... If Quick Measurement Mode has been set and power is turned off, this setting indicates whether or not Quick Measurement Mode should be restored when power is turned on again. · ON: Restore Quick Measurement Mode. · OFF: Do not restore Quick Measurement Mode. ON OFF ON... Sets the data to transmit on the RS-232C port. · OFF: Select this when nothing is connected to the RS-232C. · NNKE: Select this when connected to an Auto Optester "Remote Vision". · NK:Select this when connected to a Nikon Auto Optester "OT3A", "7A" or "8A". · PC: Select this when connected to a PC. · E1 to E5: Reserved for future use OFF NNKE NK PC E1 E2 E3 E4 E5 OFF... Sets the infrared communications destination when there is more than one Auto Optester "Remote Vision". · OFF: Select this when there are no infrared communications with a Remote Vision. · 1 to 4: Select the number of the Remote Vision with which you want to communicate. · SELECT: Select this when you want to select from more than one Remote Vision. OFF 1 2 3 4 SELECT OFF... Sets the language to use in on-screen displays and printouts. (See table on next page.) EG DN DU FR GR HN IN IT NR PL PR SP SW TR JP EG... Pressing V D /3 when the cursor is at this item position will bring up the "EDIT MESSAGE screen". ( P.42) ------ 39 Available Settings for WORD EG (ENGLISH) DN (DANISH) DU (DUTCH) FR (FRENCH) RIGHT R H R D GR (GERMAN) R HN (HUNGARIAN) J IN (INDONESIAN) KN IT (ITALIAN) D NR (NORWEGIAN) H PL (POLISH) P PR (PORTUGUESE) D SP (SPANISH) D SW (SWEDISH) H TR (TURKISH) R JP (JAPANESE) R LEFT SPH CYL AXIS PD VD L S SPH C CYL A AX PD VD V S SPH C CYL A AX PD VD L S SPH C CYL A AS PD VD G S SPH C CYL A AXS PD VD L S SPH C CYL A ACH PD VD B S SZF C CYL T TEN PT VT KR S SPH C CYL A AX PD VD S S SF C CYL A AS PD VD V S SPH C CYL A AXS PD VD L S SF C CYL O OS RZ VO E E ESF C CIL E EIXO DP DV I S SPH C CIL A AXE PD VD V S SF C CYL A AX PD TA L S SPH C CYL A AXS PM VM L S SPH C CYL A AX PD VD Indication in printouts 40 5. Making Various Settings (Setup) 5 - 10 Time and Date Setting Screen Pressing V D /3 on the "OTHER SETTING screen" when the cursor is at "CLOCK" will bring up the "time and date setting screen". From this screen, the time, date, time display format, and date display format can be set. CLOCK 02. 12. 12 12 : 32 am YEAR MONTH DAY HOUR MINUTE DATEFORM TIMEFORM : 02 : 12 : 12 : 12 : 32 : YMD : AM / PM + EXIT Year: 00 to 99 (last two digits of year) Month: 1 to 12 or Jan to Dec Day: 1 to 31 Hour: 0 to 12 or 0 to 24 Minute: 00 to 60 Date display format: YMD (year/month/day), MDY (month/day/year), DMY (day/month/year), YMND (year/month name/ day), MNDY (month name/day/year), DMNY (day/ month name/year) Time display format: AM/PM, 24H RK /1 : Moves the cursor down. RETRO/2 : Moves the cursor up. V D /3 : Selects setting contents for the item at the cursor position. A-C-M QUICK /4 : Returns to the "SETUP Screen". 41 5. Making Various Settings (Setup) 5 - 11 EDIT MESSAGE Screen Pressing V D /3 on the "OTHER SETTING screen" when the cursor is at "EDIT MESSAGE" will bring up the "EDIT MESSAGE screen". From this screen, messages up to 24 characters by 2 lines (48 total characters) can be input. Pressing the SET key will store the message and return to the "OTHER SETTING screen". EDIT MESSAGE AUTOREFRACTOKERATOMETER SPEEDY-K A B CDE F GHI J K L MN OP QR S T U V WX Y Z . - / 0123456789 ( ) # $ &? !%+ PUSH SET TO EXIT SELECT BS RK /1 : Moves the cursor down. RETRO/2 : Moves the cursor up. V D /3 : Selects the character at the cursor position. A-C-M QUICK /4 : Goes back one space. 42 Connecting to External Devices RS-232C Interface Connector The power supply includes a connector for connecting to external devices. This connector is for interfaces which conform to the EIA RS-232C standard. It is possible to send measured results to external devices such as a Righton or Nikon Auto Optester or commercially available PC via this connector. When a Righton Auto Optester (such as Remote Vision) or a Nikon Auto Optester (such as OT3A, OT7A, OT8A) is connected, the lens power data measured by Auto Refractometer is automatically transferred to the Auto Optester, allowing a speedier subjective examination. If you create and run an appropriate software program on a PC, it is also possible to store data and statistically process it more efficiently. For details on this interface, please contact your nearest Nikon representative. Video Signal Output Connector This connector is for the video output terminal (EIA standard composite video signal) by which you can record the image by an external video printer. 43 Maintenance 7 - 1 Checking Measurement Accuracy Before using this unit check its measurement accuracy using the model eye provided. For details on how to measure using the model eye and checking accuracy, refer to "2. Preparation". 7 - 2 Replacing a Printer Paper Roll When printer paper is about to run out, a red line will appear on the paper. In this case, replace the paper roll. 1 Turn the unit's power ON. 2 Push the "PUSH" part of the printer's cover, remove the cover, and remove the old roll. 3 Pull out the paper of the new roll past the location of the adhesive and crease it. Gently PPUuSsHh to open tear the paper along the crease. Tearing the paper in this way avoids printing on the part with adhesive. Also, if the sharp corners have been cut after tearing the paper, you can insert the paper more easily. 4 Press PRINT to feed the paper. Insert printer paper into the feeding port as shown in the figure Cut off the corners of the paper. so that it will feed properly. d · Do not to insert the printer paper upside down. Release lever · If the printer paper jams or is inserted at an angle, raise the release lever and adjust the position of the printer paper. · The paper will not feed when the lever is raised. · If the printer paper is used up during printing, the message "PAPER END" will appear. If this happens, insert a new paper roll as previously described. Printing will start again from the beginning of the data. No key operations are accepted when the message "PAPER END" appears. Do not turn the unit's power OFF while the message "PAPER END" is displayed. 5 Replace the printer's cover. 44 7. Maintenance 7 - 3 Changing the Fuses CAUTION Always turn the power switch OFF and unplug the power cord from the outlet before inspecting or changing fuses. Use the following type of fuse for both fuses. Do not use any other type of fuse. Spare fuses may be ordered from your nearest Righton representative. "Time lag fuse T1AL/250V" SCHURTER 0034.3117 A fuse may be blown if the POWER lamp and/or fixation chart do not light or the TV screen does not brighten even though the power switch is ON. Unfasten the tabs on both sides of the fuse holder with the tip of a small flat-top screwdriver. Remove the fuse from the fuse holder to check and replace it. Fuse holder 45 7. Maintenance 7 - 4 Cleaning the Chin and Forehead Rests Be sure to clean the chin and forehead rests periodically. Wipe these surfaces with a soft cloth or tissue paper moistened with lens cleaning liquid or absolute alcohol (commercially available). 7 - 5 Cleaning the Measurement Window The measurement window is dust-resistant glass. If any dust on the glass is visible from the patient side, use the blower provided to powerfully blow air several times to remove the dust. If the dust cannot be removed, wipe the glass with a lens cleaning liquid or absolute alcohol (commercially available). d Because the dust-resistant glass is thin and fragile, do not press it too hard. 7 - 6 Cleaning the Model Eye Sometimes correct values cannot be obtained when measuring the model eye due to dust or fingerprints on the model eye's lens surface. If this occurs, gently wipe the lens surface with a clean and soft cotton cloth (such as gauze) moistened with a little cleaning solution or absolute alcohol (commercially available) taking care not to scratch the lens surface. (Never use a handkerchief or degreased cotton wool.) d A microscopic scratch on the lens surface of the model eye may reduce the accuracy of measurement. Be careful not to bump the model eye against a hard object or drop it on the floor. 7 - 7 Cleaning the Painted Components Do not use organic solvents (such as alcohol, ether, or paint thinner) on painted components, plastic components, or printed labels. Doing so could result in discoloration or in the peeling of printed characters. If the dirt is hard to remove, dampen a piece of gauze with a small amount of neutral detergent thinned with water, then wipe the dirty surface gently. 46 Troubleshooting Check the following items before requesting repairs. Symptom POWER lamp does not light even though power is on. Cannot make measurements. Measured values are not stable. Does not print anything. Paper is jammed. Paper does not come out easily. Check Point Is the input power cord connected securely? Are the fuses blown? Is foreign matter obstructing light inside the pupil? Are you using the specified paper? Is the printer's release lever raised? Is the printer paper loaded upside down? Is the printer paper loaded correctly? Is the cover pressing on the printer paper? Cause and Solution Securely connect the input power cord. If the fuses are blown, replace them. ( P.45) Check the eye in Retro Mode. ( P.28) Use the specified printer paper. Lower the release lever toward you. Insert the printer paper correctly. ( P.44) Insert the printer paper correctly. ( P.44) Attach the cover correctly. ( P.44) If any of the following errors appear on the screen, please contact your nearest Righton representative as this indicates internal malfunction of the unit. · ERR** (** represent numeral.) · BACKUP ERR 47 Specifications 9 - 1 Measurements · Refraction Measurements Measurement range: S+C: -18 to +23 Dp (measurement range for a VD value of 12) C: 0 to -12 Dp or 0 to +12Dp AX: 1 to 180° Minimum unit: S, C: Auto/0.25D/0.12D (switchable) AX: 1° Minimum pupil diameter: ø 2.5 mm Measurement wavelength: 860 nm · Keratometry Measurements Measurement range: Corneal radius curvature: 5 to 11 mm Corneal astigmatism: 0 to -12 Dp Minimum unit: Corneal radius curvature: 0.01 mm Corneal astigmatism: 0.12 Dp Cylindrical axis: 1° Measurement area: Center: 23°, ø 3.2 (radius 8 mm) Periphery: 50°, ø 6.8 (radius 8 mm) · Common Functions (Measurement Time and Mode) RK mode: Continuous measurement: RKP, RK Single measurement: KP, R, K Measurement time: Refractometer only: Time to acquire one measurement: 0.01 sec. Keratometry only: Time to acquire one measurement: 0.033 sec. Measurement time during continuous measurement: RKP: 0.45 sec/measurement at continuous measurement RK: 0.35 sec/measurement at continuous measurement KP: 0.25 sec/measurement at single measurement R: 0.2 sec/measurement at single measurement K: 0.15 sec/measurement at single measurement Measurement mode: Auto measurement: Contiguous operation of automatic start, stop, and print is possible without operating any keys. Continuous measurement: Keratometry stops automatically, refractometry is continuous. Manual measurement: Pressing the joystick one time results in one measurement, holding it down results in continuous measurement. Quick Measurement: Measurement is given priority over fogging to decrease the time required for refraction measurements. Fixation chart: Picture target Fixation chart brightness: 2-level switchable illumination Mire ring: 18-dot LED, ø 2.6 (at R8mm) for alignment 48 9. Specifications Retro illumination: Pressing the RETRO/2 key turns off exterior illumination of the eye and causes alignment marks and other displays to disappear allowing retro illumination of the patient's eye for observation of cataracts, scratches, etc. Corneal vertex distance: 0, 12, 13.5, 13.75, 15, 16 mm PD measurement: Up to 83 mm (depending on the sliding seat distance between left and right eyes) Unit of measurement: 1 mm Left-right eye distinction: Distinguished by measurement position versus the center of the sliding seat. · Measurement Accuracy Spherical and cylindrical power: Radius curvature (center): Radius curvature (periphery): ±0.25 D or less for 0 to ±10 D ±0.5 D or less for less than -10D and larger than +10D ±0.02 mm or less ±0.05 mm or less 9 - 2 Main Body and Miscellaneous Main unit dimensions: Weight: Input voltage: Power consumption: Classification: Real-time clock: Interface: Printer: Monitor: Power saving system: Eye diagram printout: Eye data memory: Classification of device (EN60825-1:1994): Wavelength of LED: Radiation power: Chopped frequency: 254 (W) x 480 (D) x 473 (H) mm Approx. 17 kg AC 100 V, 120 V or 230 V (50/60 Hz common) Voltage set by voltage switcher 0.5 A, 0.4 A or 0.2 A Protection class I, TYPE B Built-in real-time clock for printing the year, month, day, hour and minute RS-232C standard interface x 1 Infrared communications with Remote Vision 58-mm wide line printer 5.5-inch black and white monitor Enters sleep mode if no keys are pressed for three minutes Yes Up to 100 patients Class1 LED product CLASS 1 LED PRODUCT LED Klasse 1 855 to 870 nm 245µWmax 600 Hz 0459 49Adobe PDF Library 2.0 Illustrator