Doctor insights on:
What Is The Rate Of Occurence For Color Blindness
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
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
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
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
Why am i color blind? What is the cause of color blindness? No one in my family has the gene that causes color blindness.
Blame your Mom: If you have red-green color deficiency, then you carry a defective x-chromosome which you got from your mom (i assume you are a male). Your mom was a carrier so she was color normal and you had a 50% chance of getting the abnormal x from her. So in fact someone in your family, mom, had the gene. ...Read moreSee 1 more doctor answer
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
Depends: It depends on various factors, such as the age of the patient, and other symptoms. If it's a painful loss of vision, it could mean one thing, or it could be common in old age. It can also commonly occur in a migraine. You should probably get evaluated by your doctor. ...Read moreSee 1 more doctor answer
None: Most color deficiency is inherited and suggested means such as a red contact lens over one eye merely shift the axis of color confusion to another pattern. Color blindness can be acquired in severe retinal disease like advanced diabetes and also optic nerve disease. Improvement is possible here if the underlying disease can be treated. ...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
Yes: You are referring to the depth of loss in color deficiency. Many different patterns are inherited with some being unable to discriminate strong colors from one another and others who can see the strong colors but will have trouble with weaker (desaturated) colors. ...Read more
What are the odds of having one eye that is green and the center of the iris is brown while the other is blue with the center is brown? Born with it.
Rare: Relatively rare. Usually not an issue, but would recommend seeing an ophthalmologist at least once . Here is some information: http://www.scientificamerican.com/article/how-does-someone-get-two/ ...Read more
Color vision anomaly: Color blindness is a misnomer, as most color blind people see some colors, they just see the hues differently than the norm. This can be an advantage if looking at camoflage. Our cone cells come in three types to see red, blue and yellow, and the receptors in color vision defect patients are either lacking or at lower levels than i. ...Read moreSee 2 more doctor answers
Depends on how young: Most women are sensitive to their age and the issue of when one is young v. Not young is in order. However, glaucoma is not common in young women but is more of an older age issue. If present in a young women, it can be serious and needs the close attention of an ophthalmologist or a glaucoma specialist. ...Read more
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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