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What Is The Rate Of Occurrence Of Color Blindness In The Us
About 8%: The standard statistics for inherited color deficiency is about 7.5% in males and 1/2 % in females. This can vary somewhat with different racial groups. The degree of color deficiency and the type are variable so your ophthalmologist can test you and see in which category you are if that is important to you and also give you information about your family possibilities. ...Read moreSee 1 more doctor answer
Ophthalmologist prefer to use the term color deficit as blindness conveys other meanings. Lowered color perception can be inherited (many forms), can result from advanced loss of retinal cells, inherited retinal disease, and some forms occur due to CNS injury. There are excellent tests for the various types and they can be functionally ...Read more
8% males 1/2% fem: Color deficiency is mostly an inherited defect of the light receptors with a strong sex linking. Therefore much more common in males. Some cases of lowered color deficiency can occur in global retinal losses such as advancing diabetes and there are a few rare central nervous system color deficiencies as reported by oliver sacks. ...Read more
8 %: Color blindness is an inherited deficiency in color recognition which occurs in about 7.5% of males and 1/2% of females. There are some variations in different racial and country groups. It is generally not functionally a problem except for certain occupational groups such as fruit graders, painters, etc. ...Read more
Brown: The base color of every iris is brown. The thicker the layer of brown pigment is, the "browner" the eye looks, while a thinner layer of pigment leaves the iris blue. Additionally, there are green pigment granules in some irises, and again, depending on how much green is present, the eye can have a hazel or green color. Eyes can also be pink if there is little pigment (albino). ...Read moreSee 2 more doctor answers
Cataract: The most common cause of visual deterioration is cataract., nearly 50% of all causes. Treatable with surgery. Second is glaucoma (about 12%), preventable with early detection. Detection and treatment are more prevalent in developed countries. Third is probably macular degeneration, often not treatable. ...Read more
Too much oxygen: In the old days high doses of pure oxygen were given to prematures to keep them pink. Many ended up blind. Over time it became apparent that it was the fault of the oxygen. The retina is full of tiny blood vessels that go into spasm and may leak blood. Careful monitoring of the retina and treatment has improved outcome. Also, the bright light used for bilirubin can be harmful. ...Read more
See below: Congenital color blindness is much more common in males since some (the red and green) of the color photopigments are on the x-chromosome (men only have one [xy] while women have two [xx]). Less than 10% of the population has any form of color blindness (there are several types). Acquired color blindness can be due to macular, optic nerve, or brain disease/trauma. ...Read more
Lots of things: Color of urine can be a refelection of how concentrated the urine is, if there is any blood in the urine, or if you have ingested & are clearing through your kidneys something that adds color to the urine, such as Azo standard/ pyridium, (phenazopyridine) which is used to help patients with bladder infections and has an orange color. Other meds can do similar things and have different colors. ...Read more
Optic neuropathy : This is a classic symptom of ischemic optic neuropathy although it usually occurs in the upper visual fields . Other possibilities include retinal detachments , arterial occlusions of the retina, infections, and autoimmune disease of the retinal vascular system. The list is extensive and this just names a few ...Read moreSee 1 more doctor answer
Lamin A/C mutation: Different mutations within the lamin a/c gene cause different genetic disorders. Lamin a/c is needed to provide stability to the cell. With the particular mutation found in progeria, skin and hair (along with other systems) get damaged. Though i'm not sure, i suspect that rapid cell division makes skin and hair more likely to get damaged sooner from this particular lamin a/c mutation. ...Read more
Many causes: hemorrhagic stroke can happen from severe elevation in blood pressure (most common), or from an ischemic stroke transforming into a hemorrhagic, or a subarachnoid hemorrhage from a ruptured aneurysm, or from an AVM (arteriovenous malformation), or a large cortical brain hemorrhage from an amyloid angiopathy (in elderly with dementia) etc etc ...Read more
One week: If last more or have risk factors consult your doctor. Those with chronic diseases of the heart, lungs, or kidneys (asthma, cystic fibrosis are examples) pregnant women people with obesity or diabetes anyone who is HIV positive or has aids residents of nursing homes and other facilities elderly people (older than 65 years of age). ...Read more
Developed world: Having experience overseas, my guess is that in underdeveloped countries when a person shows symptoms of mental illness, he/she are taken by family to isolation or they are labeled insane & end up roaming the streets. Anything less is treated thru nature/nurture, with proper medical/psychological interventions being reserved for the rich or fortunate few. ...Read moreSee 2 more doctor answers
Vision impairment and blindness are conditions in which a person cannot see well or see at all, even with glasses or contact lenses. If a person's best vision (with correction) out of either eye is only 20/70 - 20/200, he is impaired. If he can see no better than 20/200 or his visual field is no more than 20 degrees (severe "tunnel" vision), ...Read more
Loss of vision reflects the inability to perceive images. Such a phenotype can be due to occlusive or barriers to light (e.g. cataracts) through retinal alterations (e.g. wet macular degeneration) to optic nerve lesions (e.g. from a pituitary adenoma) to central nervous system ...Read more
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