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Need Your Topcon CT-80 Repaired?

Tell us what’s wrong with your unit– we’ll arrange picking it up, and repair it back to factory specifications. Although your instrument may no longer be supported by the manufacturer, we produce a variety of original parts to ensure future service for the lifetime of your instrument.

 

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Setting The Measurement Mode

Note: Adjust the height of the automatic instrument table so that the correct measurement values can be obtained by allowing the patient to undergo measurements in a comfortable position. Have the patient relax to secure correct measurement values; make sure the patient does not hold their breath or remain tense.

The initial status of the measurement is AUTO, upon turning the power ON.

Return to the Measurement screen.

Press A/M on the control panel and change the measurement mode display to AUTO.

Setting The Measuring Range

In this machine, the measuring range can be switched between 0-30 and 0-60. Normally, the 0-30 range is used, but if the patient’s intraocular pressure is high, switch to 0-60. The initial status of the measuring range is 0-30, upon turning the power ON.

Return to the Measurement screen.

Press 30/60 button on the control panel and make the measuring range display 0-30.

  • Hold the control lever and pull the machine body towards the operator.

  • Move the control lever in directions as needed and bring the patient’s eye to the center of the monitor screen.

  • Tell the patient to gaze at the yellow-green light.
  • Move the machine body toward the patient and focus the target eye. A vague alignment dot becomes seen reflected in the cornea.

  • Move the machine body in directions as needed in order to get the alignment dot within the inner alignment mark on the monitor screen,
  • Holding the alignment dot within the inner alignment mark, slightly push the machine body toward the patient. When the machine body approaches the target eye, the alignment bar and “FORWARD” display appear on the monitor screen.

Note: At this moment, be careful not to catch eyelashes and eyelids within the outer alignment mark so as to ensure correct measurements.

Note: If the instruments is too close to the target eye, with regard to the alignment reference position, “TOO CLOSE” is displayed on the monitor screen, and if it is too far, “FORWARD” is displayed. The alignment bar is displayed as a broken line when the instrument is close to the target eye and a solid live when it is far. Also, the alignment bar is shortened accordingly as it approaches the alignment reference position. These factors are displayed only when the alignment dot is near the inner alignment mark.

  • After the alignment bar is displayed, push the machine body out a little bit more. When the alignment is adjusted, measurement is done automatically and the measurement value is displayed on the monitor screen.

Display of Measurement Values

Measurement values are displayed on the monitor screen for up to three measurements. From the fourth measurement on, values of earlier measurements are deleted in order.

Figure only: Correct measurement

Figure in ( ): Low in reliability

ERR: Incorrect measurement

OVER: Measurement value exceeding the measuring range

Note: If the result is a figure in ( ) or ERR, do the measurement again, making sure the patient does not blink and eyelashes do not get in the outer alignment mark. If OVER is displayed, switch the measuring range to 0-60 and do the measurement again.

This machine is equipped with a function for checking the correct operations measurement system inside the instrument.

  • Remove the measuring window cap.
  • Press  on the control panel. Air is ejected from the measuring nozzle and checking is done automatically
  • Make sure “OK” is displayed on the monitor screen. The Menu screen should be displayed a few seconds afterwards.

Normal operation screen

Note: If “NG (+)” or “NG (-)” is displayed, an anomaly has occurred. Turn OFF the power switch, please check again if there is any foreign matter on and around the measuring nozzle. If any, turn OFF power switch, clean it off and then turn ON the power switch. Press  and perform the checking procedure again.

Cleaning the Measuring Window Glass

  • To secure auto alignment and correct measurement values, clean the measuring window glass after each day’s work.
  • Clean the glass when “CLEAN THE MEASURING WINDOW GLASS” is displayed on the monitor screen.
Caution: To clean the measuring window glass, measuring nozzle and the window glass inside the measuring nozzle, use ethanol. Using other chemicals may cause damage to the patient’s eye during measurement.
Note: Do not use tissues, as they may make the stain more noticeable. Do not use tweezers or gauze, as these may scratch the lens and glass surfaces.
Steps to cleaning measuring window glass:
  • Prepare the ethanol.
  • Using a blower, remove dust and dirt from the glass surface.
  • Moisten the applicator with ethanol.
  • Wipe the glass surface lightly with the applicator, from the center outward.
  • Use a new applicator and wipe the glass surface in a similar manner; repeat this several times.

Note: To ensure thorough removal of grease from the window glass, be sure to replace the applicator and use a new one for each of these repeated wiping operations.

  • Cleaning is completed when grease is thoroughly removed.

Note: When the measuring window glass becomes stained “CLEAN THE MEASURING WINDOW GLASS” is displayed on the monitor screen.

Cleaning the Nozzle and Window Glass Inside the Nozzle

  • If there is any foreign matter on and around the measuring nozzle, it may enter and damage the patient’s eye during the measurement. If any, cream the nozzle.
  • When the window glass inside the nozzle becomes stained, it makes the fixation target unclear, causing errors in auto alignment and measurement values. If the fixation target is unclear or measurement values with parentheses are frequent, clean the window glass inside the nozzle.
  • Clean the glass when “CLEAN THE CHAMBER GLASS” is displayed on the monitor.

Caution: To clean the measuring window glass, measuring nozzle and the window glass inside the measuring nozzle, use ethanol. Using other chemicals may cause dagmage to the patients eye during measurement.

Note: Do not apply unreasonable force to the measuring nozzle while cleaning. To avoid problems, do not leave the cotton fibers inside. Be sure to use only the attached applicator.

Steps to cleaning nozzle and window glass inside the nozzle:

  • Prepare the ethanol.
  • Moisten the applicator with ethanol.
  • Insert the applicator into the nozzle, lightly touch the glass surface, and turn the applicator a few times.
  • Use a new applicator and wipe the glass surface in a similar manner; repeat this a few times.

Note: The used applicator contains grease and it only scatters grease if used again; the light transmittance is not improved at all. Be sure to replace the applicator and use a new one for each of these repeated cleaning operations.

  • Cleaning is completed when the grease is thoroughly removed. Perform and air check to confirm normal operation.

Note: When the window glass inside the nozzle becomes stained, it makes the fixation target unclear and “CLEAN THE CHAMBER GLASS” is displayed on the monitor screen.

Note: If paper is jammed inside the printer, printing is not complete. Attempts to forcibly use the printer may lead to problems.

  • Remove the printer cover, release the paper retainer lever and remove the jammed paper.