Prescription Analysis第 51 / 100 题
Compensated power calculations are most critical when the fitted vertex distance differs from what?
a.The frame PD
b.The refracted vertex distance
c.The seg height
d.The base curve
解析
The refraction is done at a specific vertex distance; when the dispensed frame sits at a different vertex distance, the effective power shifts, so compensation restores the intended power at the eye.
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