Are the lenses thinner at the middle or at the edges when the optical prescription of a pair of spectacle is Right eye : - 3.5 D Left eye : - 4.00 D.
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Hey!!!!!
●The lenses prescribed are concave lenses. Concave lenses are thinner at the middle.
●Focal length is the reciprocal of power of lens. Therefore the lenses prescribed for right eye has greatest focal length .
●The left eye is weaker.
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●The lenses prescribed are concave lenses. Concave lenses are thinner at the middle.
●Focal length is the reciprocal of power of lens. Therefore the lenses prescribed for right eye has greatest focal length .
●The left eye is weaker.
=======================================
_-_-_-_☆
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0
Explanation:
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