Mr Bharat's 65 year old mother was complaining about blurred vision in both the eyes due to which she could not see things clearly, Mr Bharat took his mother to an eye hospital. The doctor examined her eyes carefully and concluded that she has a medical condition which could not be corrected by using any type of spectacle lenses and it required surgery. Her eyes were operated upon and she could then see once again properly.
What happens to the eye lens during this defect? What is done during surgical operation of the eyes to restore the correct vision ?

Explanation

During the development of cataract, a membrane is gradually formed over both the eye lenses making the eye lenses cloudy. This makes the vision blurred.
During surgical operation, the cloudy eve lenses are removed from the eves and suitable artificial lenses are inserted in their place.