In case of Manual
1. Look for the subject eye by operating the joystick.
The Kerato ring appears as bringing it into focus.
If the eyelid is over the Kerato ring, urge the examinee to open his/her eye wider.
2. The alignment mark (+) will appear as aligning the reticle mark with the center of the pupil of the subject
eye and bringing it into focus. Operate the joystick in such a way that the alignment mark (+) comes to the
center of the reticle.
1. Reticle mark
2. Alignment mark
3. Operate the joystick so as to bring it into focus as aligning the alignment mark (+) with the center of the
reticle mark. Start the measurement when alignment is achieved and the mark of the measurable minimum
pupil diameter is changed to green.
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