1. Presbyopia is also called as old age hypermetropia.
2. The power of accommodation of eye usually decreases with ageing. The near point of aged people recedes and they find it difficult to see nearby objects comfortably and clearly.
3. As ciliary muscles lose the capacity to change focal length of eye lens, aged people experience eye lens presbyopia.
4. It is corrected by using convex lens of suitable focal length.
2. The power of accommodation of eye usually decreases with ageing. The near point of aged people recedes and they find it difficult to see nearby objects comfortably and clearly.
3. As ciliary muscles lose the capacity to change focal length of eye lens, aged people experience eye lens presbyopia.
4. It is corrected by using convex lens of suitable focal length.
