If you are finding it difficult to see because you have a Cataract you may need cataract surgery. A Cataract simply means a cloudy lens in your eye. The lens is the clear part in the front of the eye that helps to focus light or an image on the retina (the lining at the back of the eye) which is sensitive to light. There the light or image is converted into nerve waves or signals and these "travel" through the nerves o a certain area of the brain that finally helps you to see the light and image. In an early Cataract, the lens may become yellow, or turn brown. This would make things look yellow or brown through that eye. Some Cataracts turn white. In the old days, people thought it really looked like a waterfall, or a Cataract. Cataracts usually form in both eyes. They steadily get worse and cataract surgery is needed. One eye will probably be more trouble than the other. Cataracts are most common in later years, but children and young people also get them. Sometimes, they happen with other diseases, such as diabetes. Some drugs such as steroid tablets can cause them. Smoking, alcohol and excessive exposure to sunlight are three other risk factors for developing a Cataract.  Some Cataracts run in families. Finally, a Cataract can develop years after a trauma in the eye or after exposure to radiation. If you have other things wrong with your eye as well as a Cataract, you may not be able to see perfectly after the Cataract surgery.

A cortical cataract, which forms in the lens cortex, gradually extends its spokes from the outside of the lens to the center. Diabetics are susceptible to developing cortical cataracts.

A nuclear cataract is most commonly seen as it forms. This cataract forms in the nucleus, the center of the lens, and is due to natural aging changes.

A subcapsular cataract begins at the back of the lens. People with diabetes, farsightedness, pigmentosa, retinitisor and those taking high doses of steroids may also develop a subcapsular cataract.