Prescription Analysis第 42 / 100 题
A -8.00 D lens is moved closer to the eye. Its effective minus power does what?
a.Decreases (less minus effect)
b.Increases (more minus effect)
c.Stays exactly the same
d.Becomes plus power
解析
For a minus lens moved closer to the eye, the effective power decreases; moved farther away, the effective minus power increases. Vertex compensation adjusts for this in high prescriptions.
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