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CBSE Class 10 Answered

what are the causes of presbyopia?draw labeled diagram of a lens used for the correction of this defect of vision?
Asked by rayalu12345 | 13 Mar, 2019, 03:40: PM
answered-by-expert Expert Answer
The main cause of presbyopia is weakening of ciliary muscles and diminishing flexibility of the eye lens due to old age. As a result eye loses its power of accomodation and the person is not able to see nearby objects clearly. It is corrected in the same way as hypermetropia by using convex lens.
 
Answered by Utkarsh Lokhande | 13 Mar, 2019, 03:55: PM

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