Question

If D is the distance of far point for a Myopic eye then what is the focal length of

concave lens required to rectify the deffect ?​

Answer 1

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The far point for this eye is at infinity (effectively anywhere beyond ~ 5 m). Nearsighted (myopic) eye: The image point of an object point at infinity is formed in front of the retina. The far point of this eye is closer than infinity; the eye cannot form a clear image of any object point beyond this far point.

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