Kowa KW-2000 Operation Manual
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Kowa KW-2000 Operation Manual

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Operations Manual
RB-525-B04

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Summary of Contents for Kowa KW-2000

  • Page 1 Auto Refkeratometer Operations Manual RB-525-B04...

  • Page 2: Introduction

    If you find any imperfect collating or missing pages, contact your local distributor for replacement. SAFETY CONSIDERATION KW-2000 is a Class I, Type B medical instrument as well as LED Class 2 product. This instrument complies with Medical Device Directive 93/42/EEC.

  • Page 3: Contents

    Cut the power immediately if malfunction occurs during operation. Damage to the equipment or personal injury will result. Consult your dealer, if repair work needs to be carried out. At no time attempt to remodel or disassemble KW-2000. Damage to the instrument or personal injury will result.

  • Page 4: Table Of Contents

    Contents Introduction ..........................1 Safety Consideration....................... 1 Contents..........................2 Accessories..........................4 Parts Identification......................5 Conveyance and Handling Procedure ................6 Installation Environment....................6 Safeguard Summary ......................7 Preparation........................8 5.1 Setting ............................8 5.2 Applying Power ..........................9 5.3 Standby ............................10 5.4 Switch Function ...........................11 Measurement .........................

  • Page 5: Accessories

    Accessories Model eye: 1 Power cord: 1 Printer paper role: 3 (with a contact lens holder) (2.5m) (width 57mm) Two packed and one installed into the body Fuse: 2 Pack of chin rest liners: 1 Chine rest liner pin: 2 (T2A 250V) (1,000 sheets) Dustproof cover: 1...

  • Page 6: Parts Identification

    1. Parts Identification LCD monitor Power indicator IOL switch Measurement mode selection switch Menu switch Body Print switch Base Anti-sliding lock Head rest Eye mark Printer View window Measurement start switch Chin rest Joystick Power switch Rating plate Fuse holder External interface connector Power plug connector External monitor output terminal...

  • Page 7: Conveyance And Handling Procedure

    2. Conveyance and Handling Procedure When transporting the instrument, make sure that the body has been securely locked. Center the body onto the base so that their edges are aligned. Push down the lock while turning right until both body and base are firmly fixed to each other. 3.

  • Page 8: Safeguard Summary

    4. Safeguard Summary KW-2000 is a precision optical instrument. Always handle with care and avoid dropping it accidentally. Ensure that the instrument is properly grounded when connected to the power source. Do not touch the optical parts with fingers and be sure to avoid dust, as their measuring accuracy could be adversely affected and incorrect values may result.

  • Page 9: Preparation

    5. Preparation 5.1 Setting (1) Set a roll of printer paper in the printer. Refer to '11.1 Reloading Printer Paper' for the procedure. (2) Set and fix the chin rest liners with the chin rest liner pins on the chin rest. Refer to the figure on the right.

  • Page 10: Applying Power

    5.2 Applying Power (1) Confirm that the power is 'OFF' ( ). POWER T 2A 250V (2) Insert the power cord into the instrument's power plug connector. Then insert the plug into a general-purpose outlet. Always make sure that the cable is grounded.

  • Page 11: Standby

    5.3 Standby When the power is turned on, the screen as shown below appears on the LCD monitor, which is ready to take measurements. Cylindrical mark Eye selection indication Vertex distance 0.25 Increment of measurement values Reticle mark Number of measurement ( 0 ) ( 0 )

  • Page 12: Switch Function

    5.4 Switch Fu nction Operating switches below a LCD monitor correspond to the icons displayed on the bottom of the screen. For normal measurement, each icon functions as below. MENU ／ IOL switch Power indicator (It blinks when the saving Measurement mode selection switch function is activated.) Print switch...

  • Page 13: Measurement

    (5) Press the measurement start switch when the alignment mark reaches a center of the reticle mark, and take measurement. KW-2000 incorporates a high-speed continuous measurement function. To us the function, set DAT CLEARS (S) for OFF in MENU screen and keep pressing NOTE the measurement start switch during measurement.

  • Page 14: Alignment

    6.2 Alignmen t (1) Operate a joystick to bring a center of the subject eye onto a 0.25 reticle mark. When the subject eye is focused on, a kerato ring appears. If the eyelid is over the kerato ring, urge the examinee to open the eye bigger.

  • Page 15: Measurement Results

    6.3 Measurem ent Results 0.25 Refractive measurement result Keratometry measurement result ( 1 ) ( 1 ) Ker. Ref. Radius of Curvature(maximum) Spherical value S - 4 . 7 5 R 1 7 . 8 5 Cylindrical value C - 0 . 2 5 R 2 7 .

  • Page 16: Print Out

    <L> SPH 0.00 than three times. - 4.50 -0.75 - 4.50 -0.75 PD = 64 Refractive data - 4.50 -0.75 ---------------------------------------- MODEL  KW-2000(V1.00) - 4.50 -0.75 Left eye data <L> 7.59 44.50 7.57 44.50 Keratometry data 7.58 44.50 0.00...

  • Page 17: Kerato-Peripheral Measurement

    6.5 Kerato-Pe ripheral Measurement KW-2000 incorporates a function to measure not only a center but also peripheries of a cornea. Operation (1) Press a measurement mode selection switch to switch over to P.K. mode. P.K. measurement screen will appear and a 'measurement guiding mark' which indicates the measurement position will appear on the top of the screen.
  • Page 18 (3) Measure the corneal periphery. Position already measured (light blue) Next measurement position Have the examinee look at the fixation target that is (blue) illuminating. A measurement position in the guiding mark is indicated in blue. Carry out alignment and press the measurement switch.

  • Page 19: Iol Measurement

    6.6 IOL Meas urement KW-2000 has the function to measure the IOL (intraocular lens) implanted eye. When measuring the IOL implanted eye, press IOL switch on the front panel of the body to activate the function. At this time, the icon for IOL switch as well as S, C, and A on the LCD monitor turns to purple.

  • Page 20: Menu Screen Setting

    6.7 Menu Scr een Setting Standard measurement mode is preset to be ready to use. However, you can easily alter the setting if necessary. To enter the menu screen, press a menu switch below the LCD monitor. 【Menu Screen】 START MANUAL AUTO3 AUTO5 SAVE(min.)

  • Page 21: Each Item Description

    6.7.1 Each Item Description 【The First Screen】 START Selects how to start measurement. Refer to '6.8 Auto Start Function' for detail. MANUAL: Measurement is taken every time the measurement switch is pressed. AUTO 3 : Measurement is automatically started when the measurement requirements are met.
  • Page 22 DATA SCREEN Measurement results stored in memory are displayed on the screen. Refer to '6.8 Data Screen Function' for detail. All measurement results are displayed on the screen. No measurement results are displayed on the screen. W-D(cm) Sets near work distance. When measurement is taken with this item set, a near pupillary distance is automatically computed and indicated on the screen as well as on the printout.
  • Page 23 OPTION Selects and sets optional functions. Refer to '6.7.2 Optional Function' for detail. MESSAGE: shifts to the screen for registering message. shifts tot he screen for setting examinee's number. RS232C shifts to the screen to set RS232C transmission parameters. DATE FORM Selects display form of date.

  • Page 24: Optional Functions

    6.7.2 Optional Functions When you select the function you wish to set in 'OPTION' of Menu screen, you can enter each option screen. 【Each Option Screen and Description】 I. Message Input Function When this function, you can print out registered messages in the range of 22 characters/line x 2 lines.
  • Page 25 II. No. Function You can set or change the examinee's number, and select whether the number is displayed on the screen and whether the number is printed out. When you select this menu, the screen below will appear and function of each switch will change as following.
  • Page 26 III. RS232C Setting Function BAUDRATE 9600 With this function, you can send the measurement data BAUDRATE 9600 CHARACTER   8 to an external computer through an interface. The data is PARITY NONE sent using ASCII CODE. STOP BIT   1 When you select this menu, the screen on the left will appear and function of each switch will change as shown.
  • Page 27 STOP BIT   1 (2) When the setting is completed, press switch to go back to the menu screen. 【Connection method】 KW-2000 Connect with a cross cable. D-Sub25pin D-Sub9pin Male Female 9 10 11 14 15 16 17 18 19 20 21 22 23 24 25...

  • Page 28: Auto Start Function

    6.8 Auto Star t Function KW-2000 incorporates Auto Start Function. This function starts measuring automatically when alignment meets the measurement requirement, and also prints out automatically when the measurement of both eyes completes. When Auto Start Function is activated, measurement is always taken according to the setting of START regardless of REF setting in the menu screen.
  • Page 29 (6) After both eyes are measured, the arrow will disappear and the measurement result will be automatically printed out. The data printed out depends on the setting of print out format. When the data screen is set for 'ON', the screen changes to display all optimal NOTE values after both eyes are measured.

  • Page 30: Data Screen Function

    6.9 Data Scre en Function Data screen function allows you to check measurement results saved in the memory on the screen. Displaying measurement data on the screen START MANUAL AUTO3 AUTO5 (1) Select 'ON' in 'DATA SCREEN' of the Menu screen. NORMAL QUICK( 3) STEP 0.25...

  • Page 31: Power Saving Function

    This terminal outputs an NTSC video signal. If you connect an external monitor such as a portable TV or similar unit to KW-2000 with pin plug (video) cable, you can observe and check the same image that appears on the internal monitor screen of KW-2000 simultaneously.

  • Page 32: Tips For Effective Measurement

    7. Tips for Effective Measurement (1) Do not allow external light to directly penetrate the room. (2) Fluctuation of values during measurement may occur if the examinee looks something other than the target. Urge the examinee to concentrate on the target set in front. (3) Talk to the examinee in a relaxed and friendly manner, so as to allay any fear or doubt they may have.

  • Page 33: Error Messages

    8. Error Messages KW-2000 automatically evaluates measurement condition or result and indicates error messages if it is invalid. Error messages also appear when abnormality is detected in its operational system. When any error message appears, always check the system with a supplied model eye. If it appears when no abnormality in system is detected, check the measured eye for eye disease or problem.

  • Page 34: Contact Lens: Base Curve Measurement

    9. Contact Lens: Base Curve Measurement You can measure a base curve of a hard contact lens with KW-2000. To do so, attach a contact lens onto a contact lens holder of the model eye as following. (1) Put a small amount of water on a concave side of the contact lens holder.

  • Page 35: Troubleshooting

    10. Troubleshooting If there are any malfunction found, refer to the table below to take appropriate measures. Never disassemble, modify or repair the instrument. CAUTION Personal injury may result from electric shock. Symptom Causes and Measures • The power cord may be not properly connected. Make The monitor and power indicator are not sure to connect it securely.

  • Page 36: Storage And Maintenance

    11. Storage and Maintenance 11.1 Reloading Printer Paper Remove a printer cover and take a printer paper shaft Printer cutter part out. Lift a printer cutter part and pull up a head-up lever. Printer cutter part Head-up lever Set a roll of printer paper, paying attention to direction of the paper rolled up.

  • Page 37: Fuse Replacement

    Temperature Relative Humidity −10℃ ~ ＋60℃ below 70％ Always check above whenever you store or do not use KW-2000 for a long time. When you reuse the instrument after long-term storage, operate according to instruction in ' 5. Preparation.' RB-525-B04...

  • Page 38: Confirmation Of Measurement Accuracy

    11.4 Confirma tion of Measurement Accuracy It is extremely important to check operation and accuracy of the instrument using a supplied model eye. We recommend you to check accuracy periodically. When the measurement result of the model eye falls anywhere within the tolerance listed below, measurement should be considered reliable and accurate.

  • Page 39: Specifications

    12. Specifications Sphere (S) -25〜+25D (step: 0.12/0.25D) Refractive Measurement Range Cylinder (C) 0〜±10D (step: 0.12/0.25D) Axis (A) 0〜180º (step: 1°) between −10〜＋10D : ±0.25D Sphere beyond ±10 : ±0.5D Measurement Accuracy ±0.25D Cylinder Radius of 5.0〜10.0mm (step: 0.01mm) Corneal Curvature (step: 0.12/0.25D) Corneal 33.75〜67.5D...
  • Page 40 Life Science Division No.4-14, 3-chome, Nihonbashi-Honcho, Chuo-ku, Tokyo 103-8433, Japan 20001 So. Vermont Ave. Torrance, Phone: 81(3) 3279-7312 CA 90502, U.S.A. Facsimile: 81(3) 3245-1109 Phone: 1(310) 327-1913 Facsimile: 1(310) 327-4177 Manufacturer RyuSyo Industrial Co., Ltd. Kagawa Factory 958 Ikeuchi, Konan-cho, Kagawa-gun, Kagawa 761-1494 JAPAN EU Representative Immermannstrasse 65A 40210...

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