Blindness

Blindness
Related Category: Pathology
partial or complete loss of sight. Blindness may be caused by injury, by lesions of the brain or optic nerve, by disease of the cornea or retina, by pathological changes originating in systemic disorders (e.g.
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Blindness: Loss of useful sight. Blindness can be temporary or permanent. Damage to any portion of the eye, the optic nerve, or the area of the brain responsible for vision can lead to blindness.
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Blindness
Definition:
Blindness is the lack of vision, or aloss of vision that cannot be corrected with glasses or contact lenses. Blindnessmay be partial, with very limited vision, or complete,with no perception of light.
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Blindness can cause difficulty with performing everyday
tasks
Blindness can cause difficulty with performing everyday tasks such as cooking, dressing, reading and writing. When outside shopping or going for a walk, blindness can create problems.
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Blindness is the loss of vision, not correctable with lenses. Blindness can be partial, with loss of only part of the vision. It can also be complete, in which case there is no perception of light.
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Snowblindness: A burn of the cornea (the clear front surface of the eye) by ultraviolet B rays (UVB). Also called radiation keratitis or photokeratitis.
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Night blindness: What are the causes?
Q.
My father has developed night blindness and has given up driving after dark. What causes night blindness? Is there anything that can be done to treat it?
Alissa/ Colorado ...
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Color blindness results from an absence or malfunction of certain color-sensitive cells in the retina. The retina is the nerve layer at the back of the eye that converts light into nerve signals that are sent to the brain.
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Red-green color blindness - Red-green color blindness simply means that a person cannot distinguish shades of red and green (usually blue-green). Their visual acuity (ability to see) is normal.
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What is the increased risk of blindness if you smoke?
People who smoke may be twice as likely to develop AMD, and risk blindness, compared with those who have never smoked.1 Some studies put smokers' risk at three to four times that of non-smokers.
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blindness or visual disturbance
ataxia, unsteady gait
mental retardation with decreasing mental function
dementia (deterioration of ability to think)
seizures
abnormal increased muscle tone or spasm (myoclonus)
movement disorder (choreoathetosis) ...
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"Blindness mingles with the want of moral courage to deny your appetite, to lift the cross, which means to take up the very duties that cut across the natural appetites and passions.""Unpublished Testimonies, November 5, 1896.
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night blindness
A reduced ability to see in dim light. May be caused by a vitamin-A deficiency or glaucoma.
nit ...
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Blindsided by Night Blindness
Breaking the Code of Dyslexia
Breast Cancer Prevention Drug Not Worth the Cost?
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6; echovirus 9; Ecker, Alexander; Ecker, Enrique; Ecker's fissure; Eck fistula; Eck, Nikolai; eclabium; eclampsia; eclampsy; eclamptic; eclamptic retinopathy; eclamptogenic; E classification; eclectic; eclecticism; eclegm; eclipse; eclipse blindness; ...
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Color Vision Deficiency (Color Blindness)
Color Blindness
Colorectal Cancer (Colorectal Cancer)
Colorectal Cancer
Colorectal Polyps
Coma
Common COLD (Colds)
Communication Disorders in Children (Language Disorders in Children)
Compartment Syndrome ...
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Cataracts are the world's leading cause of blindness, accounting for about 42% of all cases of blindness. In the United States, most cataracts are age-related and affect more than half of all Americans older than 65 to some degree.
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Diabetes can damage the blood vessels that feed the retina, putting people with the disease at high risk for blindness.
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This serious infection can lead to a temporary loss of vision, blindness, brain abscesses, inflammation of the brain and spinal tissues (meningitis), and other complications.
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Eye infection (referred to as gonococcal ophthalmia) can lead to blindness. At the turn of the last century, it accounted for almost one fourth of cases of blindness in the United States.
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Glaucoma is the leading cause of blindness in African Americans. African Americans have a significantly increased risk for developing POAG.
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You develop temporary blindness or vision problems.
You notice weakness of an arm or a leg.
You start having trouble speaking.
You become aware of a swishing noise in either ear that is related to your heartbeat.
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Antihistamines in non-prescription medications also pose a risk of worsening narrow-angle glaucoma, a common eye disease that can lead to blindness in those over 65.
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Retinopathy and associated visual loss or blindness
Bronchopulmonary dysplasia (BPD)
Heart disease
Severe intestinal inflammation (necrotizing enterocolitis)
Jaundice
Infection or septicemia
Anemia
Low blood glucose (hypoglycemia) ...
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Herpes can also infect the eyes. It is the leading cause of infectious blindness in the world.
Treatment: Anti-viral drugs are very useful in treatment of the symptoms and prevention of recurrences.
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RETINITIS: Inflammation of the retina, linked in AIDS to cytomegalovirus infection. Untreated, it can lead to blindness.
RETINOPATHY: Noninflammatory degenerative disease of the retina.
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ColorMax color vision enhancement lenses Eyeglass lenses indicated to improve color vision in patients suffering from color blindness or color deficiency.
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results in a painful blistery red rash that is confined to one side of the body. Also referred to as shingles. The zoster rash affects one nerve distribution, or dermatome. Facial rash can lead to optic nerve involvement with resultant blindness.
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Long-term problems may include diarrhea or blindness. Toxoplasmosis (TOX-o-plaz-MO-sis), an infection of the brain and spinal cord, may cause fatigue, headaches, seizures, or paralysis on one side of the body.
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The eight types of HHV are causative agents of cold sores, blindness, cancers and life-threatening conditions in immuno-suppressed individuals.
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Retinoblastoma is usually confined to the eye, and as a result, more than 90% of children with retinoblastoma will be cured. The present challenge for those who treat retinoblastoma is to prevent blindness and other serious effects of treatment that ...
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