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Numbers in dot tests don't work

The numbers in dots tests don't work. I pass the color blindness test at
http://www.opticien-lentilles.com/daltonien_beta/new_test_daltonien.php without any problems. But when it comes to those numbers in dots tests, I cannot concentrate on the numbers. I can see that there is something there in a different color to most of the background but I cannot identify the numbers without tracing them with the mouse pointer or my finger.

Since I can trace them and identify them correctly by tracing I obviously can see the different colors but I cannot bring the numbers into focus in my mind. I pick out groupings of dots based on primarly on darkness, my mind doesn't seem to care about the color even though I can see that the dots I want to group are all different colors, the darkness stands out more than the actual color, so for example of there are red and green dots with different shades I naturally group dark reds and dark greens vs light green and pink rather than group reds vs greens, even red and green are completely different to me. After darkness, size is of next importance, given dots all of the same brightness I tend to focus on their size an group all large or all small together regardless of color - my brain groups large red and large green together vs small red and small green rather than green vs red again despite red and green being completely differnt. Seeing a grouping based on color is of least importance and I will notice it only if there is no obviously grouping based on darkess or size. Most people however focus on the numbers based on the color quite easily so there is something different about me but its not color blindness, its something in the brain after the input from the eyes.

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