Ophthalmic OpticsQuestion 6 of 100
The power of a lens surface increases as its radius of curvature does what?
a.Increases (flatter surface)
b.Stays the same
c.Decreases (steeper surface)
d.Doubles the index
Explanation
Surface power is inversely related to radius of curvature. A shorter radius means a steeper, more curved surface and greater power; a longer radius means a flatter surface and less power.
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