Question

Explain the reasons for the eye disorder presbyopia. How is it ​

Answer 1

hope it will help you

Answer 2

Presbyopia is caused during old age due to the weakening of ciliary muscles. This makes old ppl to difficult to see nearby or far objects as the ciliary muscles looses the ability to thicken or thin the lens to view objects at different distances cleraly. Bi-focal lens are used to correct this. In other words it is a combination of hypermetropia and myopia.