Whether you need cataract surgery depends on how much of a problem the cataract causes for daily activities like driving and reading. Surgery is almost always by your choice (elective) and can be scheduled when it is convenient. For people who decide to have surgery, the surgery usually works very well.
Some people have to have surgery. Children are sometimes born with cataracts that need to be removed. Other people may get cataracts after an eye injury or as a result of eye disease or other health problems. Cataracts from these causes may also need to be removed.
There is no proven way to prevent cataracts. But there are some things you can do that may help slow cataract growth. Don't smoke. Wear a hat or sunglasses when you are in the sun. And avoid sunlamps and tanning booths. Eat healthy foods. And keep diabetes under control.