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Cruising America's Great Loop and other inland routes

Red/Green Color Insensitivity

matt smith

Sat, Oct 27, 2007 10:09 PM

Ron wrote:
I prefer that to colorblind. There are many degrees of insensitivity
and for
mine, I have found a trick that works for me on red, green, and clear.

When looking at the lights, try thinking this way:

Green appears to be cool.
Clear (unless frosted) appears to be a little warmer - sometimes tinged
with
yellow.
Red appears to be very warm.
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Hi Ron, I wonder what being just red/green "insensityvity" looks like, when you throw blue in there, it's a mess. I wrote this paper for college years ago, 1 out of 12 men or "women" have some type of color "insensityvity" :). But, very rare in women, and they carry the gene. Out of 100 men being colorblind guess what you have, me. I have one of the most rare types, theres 4 worse types being all spectrums, just depends on how off of alignment the cones in your eyes are. You ask why did I write this to let people know, I don't know I'm surprised that I can still remember it :). Matt ... Ron wrote: I prefer that to colorblind. There are many degrees of insensitivity and for mine, I have found a trick that works for me on red, green, and clear. When looking at the lights, try thinking this way: Green appears to be cool. Clear (unless frosted) appears to be a little warmer - sometimes tinged with yellow. Red appears to be very warm. Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

Ron Rogers

Sun, Oct 28, 2007 12:14 AM

To me, it means that light shades of red and green look alike to me. Green
is more a problem for me than red. Green cars are problematic, but red ones
are easy.

On the water, red and green on a boat are easy, but clear versus green
requires study. Frosted signal lights while driving are easy while flashing
red versus flashing yellow (look too orange for me) require caution. The
Ishihara plate test is a disaster, but sometimes I squeak past. Taking
20,000 units of vitamin "A" per day and the wearing sunglasses all day when
outdoors help a great deal.

Color vision was required for Special Forces and I got by. Many soldiers
cannot tell the difference between red smoke and green smoke from 1250 feet
altitude. When I was in-charge, we used white for go and yellow for no go.
With the advent of sophisticated electronics and steerable parachutes this
has become somewhat academic.

Yet, in the marine world color vision remains essential. Radar is a help,
however.

Ron

----- Original Message -----
From: "matt smith" dig_unix@yahoo.com

| Hi Ron, I wonder what being just red/green "insensityvity" looks like,
| when you throw blue in there, it's a mess.

To me, it means that light shades of red and green look alike to me. Green is more a problem for me than red. Green cars are problematic, but red ones are easy. On the water, red and green on a boat are easy, but clear versus green requires study. Frosted signal lights while driving are easy while flashing red versus flashing yellow (look too orange for me) require caution. The Ishihara plate test is a disaster, but sometimes I squeak past. Taking 20,000 units of vitamin "A" per day and the wearing sunglasses all day when outdoors help a great deal. Color vision was required for Special Forces and I got by. Many soldiers cannot tell the difference between red smoke and green smoke from 1250 feet altitude. When I was in-charge, we used white for go and yellow for no go. With the advent of sophisticated electronics and steerable parachutes this has become somewhat academic. Yet, in the marine world color vision remains essential. Radar is a help, however. Ron ----- Original Message ----- From: "matt smith" <dig_unix@yahoo.com> | Hi Ron, I wonder what being just red/green "insensityvity" looks like, | when you throw blue in there, it's a mess.