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If the birth mother of my son is monochromatic color blind (she only sees in gray scale), how likely is it that my son will be color blind?

This is a tough question. Red-green X-linked color blindness is passed through the mother and the chances for the son of a woman who is a carrier is 50 percent, and the chances for the son of a woman with the condition is 100 percent. However you are describing achromatopsia, which is a different condition. There are many congenital and acquired conditions that can cause this so without knowing the specific diagnosis it is impossible to talk about inheritance risk.

Answered by: Gary Hirshfield, MDDr. Gary Hirshfield

Categories: Children's Eye Health, Eye Diseases 

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Answered: Apr 17, 2013

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