Ask Dr. Universe: How many colors can we see?

Dr-Universe-230PULLMAN, Wash. – The human eye can see millions and millions of colors. But believe it or not, some colors exist in our world that the human eye can’t see.

That’s what I found out when I went to visit my friend Rachna Narula, an optometrist at the Washington State University Vision Clinic. Using a special camera in her office, she took a picture of my retina, the part in the back of the eye that helps us see color.

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