slimboyfat

I am colour blind and so is my little brother. I see some colours, but apparently not all. Specifically I can only see the first number in the Ishihara test. Always been that way. My wee brother is exactly the same.

http://colorvisiontesting.com/ishihara.htm

It also means I only see half or less of rainbows and various other stuff.

Then a few months ago I read that someone has invented glasses that enable colour blind people to see what most people see including rainbows and stuff. I was thinking of getting my wee bother a pair for Christmas or birthday. They are pretty expensive.

I wonder if any other colour blind people have heard of these glasses, have tried them, or have an opinion on them. From what I have read the glasses do appear to increase the range of what a colour blind person can see. However, somewhat crucially, a colour blind person cannot pass an Ishihara test while wearing the glasses. So it would appear that whatever the glasses are doing for the perception of a colour blind person they are not exactly reproducing what a person without colour blindness sees. Even so might they be worth getting?

slimboyfat

This is the article I stumbled on months ago.

http://www.forbes.com/sites/sethporges/2015/04/28/can-these-glasses-really-fix-color-blindness-we-put-them-to-the-test/

There are YouTube videos of people trying them for the first time too.

Oubliette

Color blindness is usually classified as a mild disability, however there are occasional circumstances where it can give an advantage. Some studies conclude that color blind people are better at penetrating certain color camouflages. Such findings may give an evolutionary reason for the high prevalence of red–green color blindness. - Morgan, M. J.; Adam, A.; Mollon, J. D. (June 1992). "Dichromats detect colour-camouflaged objects that are not detected by trichromats". Proc. Biol. Sci. 248 (1323): 291–5. doi:10.1098/rspb.1992.0074.

There is also a study suggesting that people with some types of color blindness can distinguish colors that people with normal color vision are not able to distinguish. - Bosten, J.M.; Robinson, J.D.; Jordan, G.; Mollon, J.D. (2005). "Multidimensional scaling reveals a color dimension unique to ‘color-deficient’ observers". Current Biology 15 (23): R950–2. doi:10.1016/j.cub.2005.11.031.

Simon

I saw an article on those same glasses - the simulations shows what the before and after effect was for people with color blindness. I took their test and came out OK so I don't need them but if I did, I think I'd be banging on their door if they are as good as they appear to be.

Are they specific to the wearer or is there anyplace you can go try them?