Ophthalmic Optics第 10 / 100 题
Add power on a multifocal lens represents what?
a.The distance sphere power
b.The prism amount
c.The additional plus power for near vision
d.The cylinder axis
解析
The add is the extra plus power in the reading segment that supplements the distance prescription to help a presbyopic patient see clearly at near. It is always a plus value.
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