What Causes People To Be Blind

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The vast majority of people with a colour vision deficiency have inherited their condition from their mother who is normally a carrier but not colour blind herself.

What causes people to be blind. A person can also be considered legally blind if their visual field that is what they perceive to either side of them is 20 degrees or less. Most blind people are totally blind. I have light perception.

For the purposes of this article we will look at the top five eye conditions that cause blindness. A person who has never had sight doesn t see samuel who was born blind tells thoughtco that saying that a blind person sees black is incorrect because that person often has no other sensation of sight to compare against. Blind people are just like sighted people in most ways but they may see the world differently.

If you interact with someone who has low vision or total blindness ask them how you can best help. Of this group approximately 50 million people are totally blind unable to see light in either eye. Most blind people are not completely without sight.

Others have focusing difficulties. Cataracts glaucoma age related macular degeneration diabetic retinopathy and retinitis pigmentosa. It can be partial or complete.

Some newborns are born blind because of genetic errors of metabolisms unable to process certain sugars or amino acids. Actually the definition of legal blindness covers a range of conditions. Common causes of blindness include diabetes macular degeneration traumatic injuries infections of the cornea or retina glaucoma and inability to obtain any glasses.

Some can read large print. What blind people actually see. Eye injuries most often occurring in people under 30 are the leading cause of monocular blindness vision loss in one eye throughout the united states injuries and cataracts affect the eye itself while abnormalities such as optic nerve hypoplasia affect the nerve bundle that sends signals from the eye to the back of the brain which can lead to decreased visual acuity.

Some have tunnel vision others peripheral. Sight is one of the most valued traits humans hold close to their hearts. Eighty percent of blindness occurs in people over 50 years old.

Others succumb to infections such as rubella during gestation while others are born strictly with eye diseases such as glaucoma or cataracts. Learn about causes diagnosis treatment and more.

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