Originally Posted by inthehole
Interesting - the balls I referenced are the equivilent of "hunter orange" which all deer hunting clothing is made from for maximum visibiliy ... brightest color I've ever seen - at dusk, they actually appear to glow brightly. I never knew color blindness would not allow a person to see something that bright...
Probably varies a lot between individuals. I'm "partially" red/green colorblind. In the army, I got 16 of 23 correct on the test. That ball looks extremely bright orange to me in that picture, and would look the same if I were looking straight at it in the grass, but the relative size of a ball in a large area of rough, for example, is what causes me a problem. So, those of us so afflicted, have trouble spotting it in our peripheral vision, due to the number of red receptors that don't work, or don't exist for us. So, we can see it - just not as easily and quickly as you would.