World Blindness

The first step in improving world blindness is to understand it.

These are the major causes of blindness around the world.

Glaucoma is caused by clogged drainage channels in the eye. This can damage the optic nerve. The optic nerve carries visual information to the brain. The result is loss of vision. Glaucoma develops gradually, and many people are not even aware that they have this disease.

A cataract is a clouding of the eye lens. Over time, protein builds up on the eye lens, clouding the light passing through the eye. As a result, vision is blurred or fuzzy. Cataracts often develop in both eyes at the same time. Symptoms include seeing halo rings around lights, glare, and double vision.

Trachoma is triggered by bacteria and causes repeated conjunctivitis. The eyes become irritated and excrete a mucous discharge.

A refractive error is an optical imperfection that makes it hard for the eye to focus on light, and causes blurred vision. This is why many people seek out optometrist. When refractive errors are not treated, or inadequately corrected, they can cause blindness.

Age Related Macula Degeneration, also known as AMD, is an eye condition that affects a part of the retina called the macula. AMD causes problems with central vision. Over a period of time, central vision becomes blurred and distorted, making it difficult to watch t.v. or read books, and may cause a blank patch in the center of a person's vision.

Diabetes retinopathy affects approximately 1.8 million people. It is caused by damage to small blood vessels in the retina as a result of diabetes.

Macular Degeneration is a common form of childhood blindness. This disease occurs when the macula at the back of the retina is damaged. Usually, peripheral visionremains good, but the picture a person sees becomes blurry. Magnifying glasses can help improve a person's sight.

Retinis Pigmentosa is also known as night blindness. This condition damages the retina and involves an abnormal development of excess pigment. It is hereditary. At the age of 10 or 12 the child begins to experience difficulty seeing. There is no known treatment.

Pterygium is a non-cancerous growth of clear and thin tissue that lays over the white part of the eye.

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