Canon TX-20 Full Auto Tonometer User Manual download pdf (Page 42)

4 Basic Operation

Press the LIMITER button to set the position where the nozzle stops.

CAUTION

Be sure to set the position where the nozzle stops for each patient

Look from the side of the patient when setting the stop position to see that the patient’s forehead

and chin are firmly against the forehead rest and chin rest. If the stop position is not set correctly,

the nozzle may contact the patient’s eye and result in injury.

1) Check that the LIMITER OFF mark is displayed.

LIMITER

OFF mark

2) Slowly move the operation lever so the nozzle approaches the eye being examined.

Look at the patient from the side to make sure that the patient’s forehead and chin are in secure

contact with the forehead rest and chin rest.

3) Set the distance between the nozzle and the patient’s eye to approximately 8 to 10 mm, and

press the LIMITER button.

The LIMITER OFF mark disappears and the nozzle stop position mark is displayed.

Nozzle stop

position mark

Stop doing measurements if the LIMITER OFF mark does not disappear even if the LIMITER

button is pressed

Stop using the instrument, and contact your sales representative or local Canon dealer.

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Canon TX-20 Full Auto Tonometer User Manual Page 42