Keratoconus is a degenerative disease of the cornea that causes it to gradually thin and bulge into a cone-like shape. This shape prevents light from focusing precisely on the macula. As the disease progresses, the shape becomes more pronounced, causing blurred or distorted vision. Patients with keratoconus

Nearsightedness occurs when light entering the eye focuses in front of the retina instead of directly on it. This is caused by a cornea that is steeper, or an eye that is longer, than a normal eye. Nearsightedness causes difficulty seeing at a distance. It is often discovered in school-age children who

Presbyopia is a difficulty in focusing that many people begin noticing after age 40. Most people first notice difficulty in reading very fine print. Print seems to have less contrast and a brighter, more direct light is needed for reading. In many cases, patients begin holding reading material further

One of the causes of a red eye is subconjunctival hemorrhage. This happens when a small blood vessel under the conjunctiva breaks and bleeds. A red patch of blood appears on the white of the eye, but causes no pain or change in vision. In some cases, the hemorrhage is caused by coughing, heaving lifting

Uveitis is an inflammation of the eye's structures responsible for its blood supply. The structures, called the uveal tract, include the iris, ciliary body and choroid. There are three major types of uveitis, each classified by the structures it affects. 1. Anterior uveitis (also known as iridocyclitis)