Dispensing第 63 / 100 题
When fitting a progressive lens, accurate fitting-cross placement is critical because what?
a.Misplacement forces the wearer to adopt awkward head postures
b.It changes the tint
c.It changes the frame color
d.It changes the base curve only
解析
The fitting cross must align with the pupil in primary gaze; if it is off, the corridor and reading zone are misplaced, forcing the patient to tilt or turn the head to find clear vision.
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