Topics: Ear, Auditory system, Tinnitus Pages: 4 (1283 words) Published: February 27, 2013
Age related macular disease:
Age-related macular disease is a common eye condition among people 50 years and older. It is a leading cause of vision loss in adults. It gradually destroys the macula, the part of the eye that provides sharp, central vision needed for seeing objects clearly. Sometimes age-related macular disease advances so slowly that vision loss does not occur for a long time. In other cases, the disorder progresses faster and may lead to a loss of vision in one or both eyes quickly. The vision loss effects everyday life by making it difficult to recognize faces, drive a car, read, print, or do close work, such as sewing or fixing things around the house. Glaucoma:

Glaucoma is a condition that causes damage to your eye's optic nerve and gets worse over time. Glaucoma tends to be inherited and may not show up until later in life. The increased pressure, called intraocular pressure, can damage the optic nerve, which transmits images to the brain. If damage to the optic nerve from high eye pressure continues, glaucoma will cause permanent loss of vision. Without treatment, glaucoma can cause total permanent blindness within a few years. Glaucoma usually occurs when pressure in your eye increases. This can happen when eye fluid isn't circulating normally in the front part of the eye. Normally, this fluid, called aqueous humor, flows out of the eye through a mesh-like channel. If this channel becomes blocked, fluid builds up, causing glaucoma. The direct cause of this blockage is unknown, but doctors do know that it can be inherited, meaning it is passed from parents to children. Cataracts:

A cataract is a clouding of the lens inside the eye which leads to a decrease in vision. It is the most common cause of blindness and is conventionally treated with surgery. Visual loss occurs because opacification of the lens obstructs light from passing and being focused on to the retina at the back of the eye. Signs and symptoms vary depending on the type of...

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