What is a cataract?

A cataract is a clouding of the lens of the eye.

The lens normally focuses light on the retina. When the lens becomes cloudy as a result of aging changes in its fibers a cataract has developed and interferes with light focusing.

.

Treatment

When the vision of either eye in a patient deteriorates to less than useful levels and cannot be corrected with eyeglasses or contact lenses, treatment should be considered. The only treatment for cataracts is surgical. The cloudy portion of the lens must be removed and replaced with a clear artificial lens.

A new technique has made it possible to remove cataracts using only eye drop anesthesia and a clear corneal incision without sutures. The operation takes approximately 20 minutes to perform and normally no eye patch is required. The operation is successful in over 95% of eyes and useful vision usually occurs within a few hours following surgery. Normal activity can be usually resumed the following day.

Currently, lasers are being investigated for cataract surgery, but from a clinical point of view throughout the world, cataracts are now removed with ultra-sound "phacoemulsification" surgery. In some cases, cloudy tissue develops on the capsule holding the lens implant, and a laser can be used to remove this type of scarring (often called a "secondary cataract").

We will be happy to examine your eyes, and talk about the specific treatment of your cataract.

Learn more about: Glaucoma

Other useful links: Ophthalmology Glossary

Return to: Cataracts & Glaucoma