Causes For Blindness

Blindness can affect one or both eyes and doesn t necessarily cause total darkness. A retinal migraine affects only one eye this rare condition causes partial or total blindness for a short period usually 10 to 20 minutes. Many people who are considered blind can still see some light or shadows but cannot see anything clearly.

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39 million of them are totally blind.

Causes for blindness. Other conditions do exist however they will not be discussed here. And 80 of blindness is found in individuals over 50 years old. Multiple diseases can afflict the same eye. Learn about causes diagnosis treatment and more.

Blindness is the inability to see things including light. For the purposes of this article we will look at the top five eye conditions that cause blindness. In this group nearly 50 million people are completely blind and they are unable to see light in both eyes. Cataracts glaucoma age related macular degeneration diabetic retinopathy and retinitis pigmentosa.

It can be partial or complete. Other causes of blindness include vitamin a deficiency retinopathy of prematurity blood vessel diseases involving the retina or optic nerve including stroke infectious diseases of the cornea or retina ocular inflammatory disease retinitis pigmentosa primary or secondary malignancies of the eye congenital abnormalities hereditary diseases of the eye and chemical poisoning from toxic agents such as methanol. In the world there are 300 400 million people who are visually impaired because of various causes. The top common causes of blindness.

Causes of blindness worldwide some 285 million people suffer from vision loss that interferes with daily activities.