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4
Check that the alignment ring is not covered by eyelashes
Looking at the monitor, check that the inner alignment ring (see the illustration in step
5 below) is not covered by eyelashes. If they are covering the ring, instruct the exam-
inee to keep his/her eye opened wide until measurement ends, or help them open the
eye wider by lifting up his/her upper eyelid lightly with your fingers.
5
Perform alignment
!
C
A
U
T
O I
Use the trackball to align the pupil and the inner alignment ring, and position the
corneal bright dots inside the inner alignment ring.
If you cannot see the dots clearly, turn the roller back and forth until you can do so.
Iris
Pupil
Corneal bright dots
4.3 Measurement in MANUAL Mode
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PD: – –
VD:13.5
MANUAL
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AX
Inner alignment ring
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Outer alignment ring
Inner alignment ring
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