Mother's cataracts

My mother said that her vision was blurry a few years ago.

So I took my mom to the ophthalmology clinic for a check-up, and they said she has cataracts.

So, both sides underwent cataract surgery.

At first, they were very satisfied, but not long after, they said they were uncomfortable again.

Since my mother is getting older, her eyelids are gradually drooping, narrowing her field of vision.

Recently, Bucheok said that his eyes are cloudy and he can't see well.

How many years does cataract surgery last once performed?

Do you often perform reoperations?