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Relation between Sph(-4.00) & 4D

2018-02-23 12:30:54
Sir, I want to know what is the meaning of the lens Power not to exceed 4D? Is it -4 (myopia) or not?
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Answers (2)

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It means +or--4d.including. cylinder.

Answered2018-02-24 15:01:25

YESNO

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Hello If this is-4 then it is myopia and if it is +4 then it is hyperopia

Answered2018-02-23 13:14:43

YESNO

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