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A 37-year-old member asked:

how does color blindness be acquired?

1 doctor answer2 doctors weighed in
Dr. David Chandler
Ophthalmology 33 years experience
Retina, optic nerve: Traditional color blindness is inherited, with 8% of men being red/green color blind. Acquired color blindness can be from any condition that affects the macula (macular degeneration and others) or the optic nerve (optic neuritis, or optic nerve atrophy). This is not red/green, but often the color red is poorly seen. Cataracts can filter out the color blue and cause yellowish vision.

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A 45-year-old member asked:

Is it common to develop color blindness in your mid 20's?

2 doctor answers1 doctor weighed in
Dr. Richard Bensinger
Ophthalmology 52 years experience
Rare: Color deficiency is inherited at birth. A few global diseases of the retina and rare strokes of the brain can affect color vision in an adult, but these are rare.
A 35-year-old member asked:

What is the most accurate and comprehensive color blindness test available nowadays?

1 doctor answer1 doctor weighed in
Dr. Tim Conrad
Ophthalmology 34 years experience
Anomaloscope: The anomaloscope is the most complete and compreshensive way to test color vision. The farnsworth 100 test is the next in line.
A 33-year-old member asked:

Help please! is color blindness reversible if it is caused by certain medications?

1 doctor answer1 doctor weighed in
Dr. Tim Conrad
Ophthalmology 34 years experience
In some cases: Loss of color vision can occur in macular toxicity by a few drugs, most commonly hydryoxychloroquine. It reverses with discontinuation of the drug.
A 37-year-old member asked:

How long does it take to reverse medicine induced color blindness?

2 doctor answers4 doctors weighed in
Dr. Edward Rubinchik
Ophthalmology 68 years experience
Maybe never: Some forms of color blindness are irreversible. Seek help.
A 32-year-old member asked:

What number of genotypes are possible for color blindness and hemophylia in population?

1 doctor answer2 doctors weighed in
Dr. Sadiqa Stelzner
Ophthalmology 28 years experience
7%: Both of these conditions are sex-linked gene that involves X-chromosome. The female is a carrier and only 7% male may get it. They are recessive gene. http://www.genetic-genealogy.co.uk/Toc115570152.html

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Last updated Jun 20, 2013
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