Advertisement Remove all ads

What is Presbyopia? Write Two Causes of this Defect. Name the Type of Lens Which Can Be Used to Correct Presbyopia. - Science

What is presbyopia? Write two causes of this defect. Name the type of lens which can be used to correct presbyopia.

Advertisement Remove all ads


Presbyopia is a defect of the eye because of which a person cannot see nearby objects clearly. This defect occurs because of the loss of the power of accommodation of the eye. Presbyopia usually occurs in old age.
The two causes of this defect are as follows.
1. Weakening of the ciliary muscles in old age.
2. Reduction in the flexibility of the eye lens.

Presbyopia, which is a special kind of hypermetropia, can be corrected by using spectacles with convex lenses.

  Is there an error in this question or solution?
Advertisement Remove all ads


Lakhmir Singh Class 10 Physics (Science)
Chapter 6 The Human Eyes And The Colorful World
Q 30 | Page 280
Advertisement Remove all ads

Video TutorialsVIEW ALL [1]

Advertisement Remove all ads

View all notifications

      Forgot password?
View in app×