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Color vision testing
You could have poor color vision without realizing it. If you have difficulty distinguishing certain colors, your eye doctor might screen your vision for a color deficiency. To do this, your doctor shows you several multicolored dot-pattern tests.

If you have no color deficiency, you’ll be able to pick out numbers and shapes from within the dot patterns. If you do have a color deficiency, you’ll find it difficult to see certain patterns within the dots.

For most people, color blindness that’s present at birth (congenital) is red-green, meaning you can’t distinguish those colors. Most people who develop color blindness as a result of disease, such as glaucoma or optic nerve disease, can’t distinguish blue-yellow.

By Admin