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CBSE Class 10 Answered

what happens to eye lens of people suffering from both hypermetropia and myopia? how is it corrected by bifocal and progresive?
Asked by Bhavi Khatri | 17 Jan, 2015, 03:44: PM
answered-by-expert Expert Answer

This is due to gradual weakening of ciliary muscles and reducing flexibility of the eye lens. It is corrected using a bifocal lens or a progressive lens.

A bifocal lens consists of both- concave and convex lenses. The upper portion consists of a concave lens which corrects myopia. The lower portion consists of a convex lens which corrects the hypermetropia. 

Answered by Yashvanti Jain | 11 Dec, 2017, 05:17: PM

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