My brother told us the other day that he has memories of being able to see in color when he was younger. And that one day, he basically woke up being red/green colorblind. How is this possible? And is it unlike normal colorblindness?
2007-12-31 09:32:28 · 5 answers · asked by Mimblewimble 4 in Health ➔ Optical
i don't think so
2007-12-31 15:14:42 · answer #1 · answered by Anonymous · 0⤊ 0⤋
No, not without other significant problems in the eye or brain.
Colour vision is basically a geneticaly determined condition, present from birth.
Acquired colour vision defects are possible, but are associated with drug side effects, or diseases disrupting either the maculae of the eyes (Leading to poor or distorted vision as well) or the brain's interpretation of colour, which agin, usually has other symptoms.
Many people with red/green colour blindness have to be told they are because, quite correctly, what they see is normal to them.
And someone with R/G colour blindness *does* see in colour. Just not as many colours as other people.
2007-12-31 19:07:51 · answer #2 · answered by Pedestal 42 7 · 1⤊ 0⤋
If he has a red/green colour defect, he can still colour, its just that he sees hundreds of different colours instead of the normal thousands of different colours. Red/green colour defect is an inherited condition, present since birth.
Other kinds of colour defects can develop over time due to various eye diseases. These conditions also cause poor vision. Total colour blindness in which one sees only in black and white is often an inherited condition, present at birth but can develop later. It is always also has poor vision.
2008-01-01 05:40:54 · answer #3 · answered by Judy B 7 · 1⤊ 0⤋
Yes it is possible, just as some people have gone to bed seeing perfectly fine, and have woken up seeing less and less, until they're blind; same goes with hearing. I remember reading a case of a person who's child went to bed perfectly fine, and yet in the morning she could not hear a thing.
Chances are his color blindness came on somewhat slowly and one morning he was able to realize there was a problem.
My father is actually red/green colorblind, although we're under the impression he was born colorblind as he never knew until he was in his 30's!
2007-12-31 09:37:16 · answer #4 · answered by DevonL 3 · 2⤊ 1⤋
maybe.........
2007-12-31 09:35:37 · answer #5 · answered by animalz63 2 · 0⤊ 2⤋