APC AR1100 Operator's Manual download pdf (Page 77)

OPERATING PROCEDURES: NT (Tonometry) Measurement: NT Mode

5 Manipulate the joystick to display the patient’s eye on the screen.

By tilting the joystick to the right and left, the

main body moves right, left, back and forth.

By turning the upper part of the joystick, the

measuring unit moves up and down.

Align the eye position to the measuring point

with right, left, up and down movements.

Adjust the focus with back and forth move-

ments.

6 Instruct the patient to look at the fixation light

(green luminous spot) in the air nozzle.

7 Perform alignment and focusing.

The methods of alignment and focusing vary

according to the 26. TRACKING SW parameter

setting.

*See “{ Auto-tracking mode and auto-shooting

mode” (page 36) for details.

Align the alignment spot reflected over the

patient’s eye with the target ( ).

Perform focusing according to the indication of

the focusing indicator displayed on the screen.

• Ensure that the patient's eyelashes or eyelid are not in the applanation area and the

patient's eye is not watery.

These factors cause measurement errors or decrease the accuracy of measurements.

If the patient's eyelashes or eyelid are within the applanation area, lift the patient's lid, paying attention not

to press against the eyeball.

If the eye is watery, have the patient blink his or her eyes or wipe tears.

• Select whether to illuminate or blink the fixation light by setting the 24. FIX LED BLINK

parameter.

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Applanation area

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Alignment spot Target

Focusing indicator

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APC AR1100 Operator's Manual Page 77

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