Check out section to know more about famous blind people who made it big in life.
- Helen Keller. 27 June 1880, American.
- Stevie Wonder. 13 May 1950, American.
- Andrea Bocelli. 22 September 1958, Italian.
- Ray Charles. 23 September 1930, American.
- Gordon Brown. 20 February 1951, British.
- Jackie Robinson.
- Homer.
- James Joyce.
People who were born blind have no understanding of how to see in their waking lives, so they can't see in their dreams. But most blind people lose their sight later in life and can dream visually. Danish research in 2014 found that as time passes, a blind person is less likely to dream in pictures.
Legally Blind: A person may be able to see large objects and people, but they are out of focus. A legally blind person may see colors or see in focus at a certain distance (e.g., be able to count fingers in front of the face). In other cases, color acuity may be lost or all vision is hazy.
Cataract. is the world's most common cause of blindness, and is responsible for the loss of vision of 20 million people.
There are many causes of blindness in children. Blindness may be due to genetic mutations, birth defects, premature birth, nutritional deficiencies, infections, injuries, and other causes. Severe retinopathy of prematurity (ROP), cataracts and refractive error are also causes.
Most types of blindness are currently incurable, so the risk-to-reward ratio for patients is high. If a problem arises with the treatment their eyesight could get worse, but if they do nothing their vision will likely decline anyway. And if the treatment works, they may be able to see for the first time in years.
If you're legally blind, your vision is 20/200 or less. That means if an object is 200 feet away, you have to stand 20 feet from it in order to see it clearly. But a person with normal vision can stand 200 feet away and see that object perfectly. An estimated 1.1 million Americans are legally blind.
Most government agencies and health care institutions agree that legal blindness is defined as a visual acuity (central vision) of 20/200 or worse in the best seeing eye or a visual field (peripheral vision) that is limited to only 20 degrees.
Common causes of blindness include diabetes, macular degeneration, traumatic injuries, infections of the cornea or retina, glaucoma, and inability to obtain any glasses.
An estimated 500 000 children become blind each year, but in developing countries up to 60% are thought to die within a year of becoming blind.
Approximately 12 million people 40 years and over in the United States have vision impairment, including 1 million who are blind, 3 million who have vision impairment after correction, and 8 million who have vision impairment due to uncorrected refractive error.
Most people who are classified as "blind" actually have remaining sight. 20/30 to 20/60, this is considered mild vision loss, or near-normal vision. 20/70 to 20/160, this is considered moderate visual impairment, or moderate low vision. 20/200 or worse, this is considered severe visual impairment, or severe low vision.
If you are partially, legally, or totally blind, you may be able to qualify for Social Security disability benefits through the Social Security Administration (SSA). Your vision loss must be quite significant, and if you have good vision in one eye, you won't qualify for disability benefits.
Because your baby has a visual impairment, she won't necessarily respond to a smile, a wave of your hand, or a funny face, the way a sighted baby does. She may not smile at you because she can't see that you're smiling at her.
A sudden loss of vision doesn't necessarily mean total blindness. It can occur in one eye or both eyes, and the loss of sight can be partial or total. Sudden blindness may only last a short time, such as a few seconds, minutes or hours. However, it could potentially be permanent, especially if not treated quickly.
What is the difference between visual impairment and blindness? The definition of visual impairment is “a decrease in the ability to see to a certain degree that causes problems not fixable by usual means, such as glasses.” Blindness is “the state of being unable to see due to injury, disease or genetic condition.”
20/70 to 20/160, this is considered moderate visual impairment, or moderate low vision. 20/200 or worse, this is considered severe visual impairment, or severe low vision. 20/500 to 20/1000, this is considered profound visual impairment or profound low vision.
MYTH #1: The laser used during LASIK can burn your eyes! Actually, as of this writing, there are no reported cases of blindness due to LASIK surgery itself. In a recent study, it was discovered that patients actually have a 34 times higher risk of going blind from a contact lens infection than going blind from LASIK.
Without treatment, glaucoma will eventually cause blindness. Even with treatment, about 15 percent of the time glaucoma can lead to blindness in at least one eye over a period of 20 years. Fortunately, glaucoma typically progresses very slowly, over years.
If you experience any of these following symptoms, see an eye doctor right away:
- Flashing Lights, Floaters, or a Gray Shadow in Your Vision.
- Sudden Loss of Vision in One Eye.
- Eye Pain.
- Eye Injury.
- Persistent Discomfort in the Eye.
- Red Eye.
- Eye Discomfort if You Wear Contact Lenses.
- Blurred Vision.
The answer, of course, is nothing. Just as blind people do not sense the color black, we do not sense anything at all in place of our lack of sensations for magnetic fields or ultraviolet light.
Take the following steps to lower your risk of eye disease and vision loss!
- Avoid Smoking. Quitting smoking can have many good effects on your health.
- Eat Healthy Foods. Lifelong good nutrition may lower your risk of some eye diseases.
- Stay Active.
- Control Your Blood Pressure.
- Protect Your Eyes from the Sun.
- Common Eye Myths.
Wearing contact lenses puts you at risk of several serious conditions including eye infections and corneal ulcers. These conditions can develop very quickly and can be very serious. In rare cases, these conditions can cause blindness. Store them in your case and take them to your eye care professional.
But losing your sight is preventable so this is a fear you may never have to face. Glaucoma is one of the major causes of blindness. If this fluid leaves the eye too slowly and begins building up, it stresses the optic nerve and causes vision loss. High blood pressure is another risk factor for this condition.
Legal blindness can also be caused by glaucoma, a disease in which the retinal neurons that send the signal from the eye to the brain die. This disease most often progresses slowly over time, with patients losing part of their visual field and/or visual acuity.
A sudden loss of vision doesn't necessarily mean total blindness. It can occur in one eye or both eyes, and the loss of sight can be partial or total. Sudden blindness may only last a short time, such as a few seconds, minutes or hours. However, it could potentially be permanent, especially if not treated quickly.
