Difference between revisions of Presbyopia
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The '''power of accommodation''' is (near power) - (far power). With the first example in each of the above, it would be 10 D - 1.5 D = 8.5 D. | The '''power of accommodation''' is (near power) - (far power). With the first example in each of the above, it would be 10 D - 1.5 D = 8.5 D. | ||
A person is generally considered to have presbyopia [[wikipedia:if and only if | iff]] his power of accommodation is less than 2.5 D. | |||
===Caveats=== | ===Caveats=== | ||