DispensingQuestion 74 of 100
The vertical position for a general-wear D-segment bifocal is typically set at what landmark?
a.The lower eyelid margin (lower limbus)
b.The center of the pupil
c.The eyebrow
d.The top of the frame
Explanation
A conventional flat-top (D) bifocal seg is usually set at the lower eyelid margin or lower limbus so it is out of the distance line of sight but reachable with a slight downward gaze.
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