Eye diseases include macular degeneration, glaucoma and optic neuritis. Treatments are available for all three diseases, although optic neuritis typically gets better on its own.
Macular degeneration occurs when the macula, a small part of the retina, deteriorates. There are two types of macular degeneration: dry and wet. The dry form, which is more common, is caused by thinning of the macular, often due to aging. The wet form is caused by abnormal blood vessels growing beneath the retina.
Glaucoma occurs when fluid accumulates in the front of the eye. This causes pressure which damages the optic nerve.
Optic neuritis occurs when the optic nerve becomes inflamed. This disease is sometimes one of the first signs of multiple sclerosis.