Fig.9b (It is the state of the display window
when Left eye pupillary distance is measured)
Important Matters
When measuring right eye pupillary distance, the right observation window is in the
state of measurement, and left observation window becomes the following state:
immeasurable area is black and measurable area is black-white strip, and then
pupillary distance pointer is invisible (as shown in Fig. 10a).
Pupillary distance pointer
Black area
Black-white strip area
Black area
Observation window
Fig.10a (It is the state of the observation window
when Right eye pupillary distance is measured)
When measuring left eye pupillary distance, the left observation window is in the state
of measurement, and the right observation window becomes the following state:
immeasurable area is black and measurable area is black-white strip, and then pupillary
distance pointer is invisible (as shown in Fig. 10b).
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