At this time there is little we can do to prevent them. However, some studies have shown that people who spend a lot of time in the sun tend to develop cataracts sooner than others. Therefore, it might not hurt to wear sunglasses or a hat to limit exposure to Ultraviolet light. A cataract is simply a clouding of the natural lens of the eye. No, a cataract is not a tumor, growth, membrane, or a film over the eye.
Most cataracts occur as part of the aging process.
However, in some instances, diabetes, trauma, strong family history and various medications or chemicals may cause cataracts. They are removed surgically, in most cases with an device that uses sound waves to soften the cataract. In most cases, no harm will be done by postponing surgery. However, you achieve the best visual results if you don't wait too long for surgery. All cataracts are not equal and some are more difficult to remove than others.