[mythtv-users] OT: colorblindness

[Z F]

--- "Jay R. Ashworth" <jra at baylink.com> wrote:

> On Tue, Mar 11, 2008 at 02:50:40PM -0400, Marc Sherman wrote:
> > Yeah, I'll do as much of it on my own as I can, and then get my
> wife to
> > go over the colour tests with me for verification.
> 
> I'm curious, cause you don't meet too many people who you know are
> colorblind... red-green?  Something else?  How much?
> 
>


Here is what I understand on the subject:

The fraction of people who are colorblind is very small.

Colorblindness is when one can not tell the colors apart.

However, color deficiency is quite common, especially amont men.
About 40% (maybe more) of men have this problem. Basically, this
means that a person can not tell certain color shades apart or
even color shades in a particular combination of colors.
I, myself, am red-defficient. This means, that I do not have enough
red-sensors (red sensitive cones) compared to normal (or they do not
function as efficiently). And, yes, I can see red and its shades, just
not in the same way as a normal human would.

Artificial lights do not help here either, as the colors are distorted
because of that too. But I can have fun in a science museum where
normal people do not see something, I do :) (and vise versa :( )

If, for example, boundaries of two colors "glow" than it also means
that the ballance between the three color-sensitive cones is a little
off. I see that two. For me Blue/Red boundary always glows to the level
of irritation. I just close my eyes when something uses this
combination
in a presentation or close the web site with such color combinations.


ZF


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