Canon TX-20 Full Auto Tonometer User Manual download pdf (Page 44)

4 Basic Operation

Use the operation lever and the measurement unit vertical movement ring to display the

patient's pupil in the monitor.

Operation lever

Measurement unit

vertical movement

ring

During full auto/auto-alignment

Show all of the pupil in the monitor.

During manual alignment

Have the alignment circle overlap close to the center of the pupil. Also, align the corneal light point

on the same straight line as the vertical alignment guide (see page 45).

How to use the operation lever

• Left tilt: The measurement unit moves to the left a little according to the left tilt.

The motion is greater and speed increases as the tilt surpasses the maximum

tilt position (the buzzer sounds briefly).

• Right tilt: The measurement unit moves to the right a little according to the right tilt.

The motion is greater and speed increases as the tilt surpasses the maximum

tilt position (the buzzer sounds briefly).

• Forward tilt: The measurement unit moves toward the patient a little according to the forward

tilt.

The motion is greater as the tilt surpasses the maximum tilt position (the buzzer

sounds briefly).

• Backward tilt: The measurement unit moves toward the examiner a little according to the

backward tilt.

The motion is greater as the tilt surpasses the maximum tilt position (the buzzer

sounds briefly).

• Rotate right: Measurement unit moves up.

• Rotate left: Measurement unit moves down.

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Canon TX-20 Full Auto Tonometer User Manual Page 44