Color vision weakness is a common ophthalmic disorder that is genetic in nature and is inherited in a consensual pattern. The gene for achromatopsia is located on the X chromosome and is a recessive gene. The female genome carries two X chromosomes, and when one of the X chromosomes carries the achromatopsia gene, it does not show symptoms of achromatopsia, while the male genome carries only one X chromosome, and when this X chromosome has the achromatopsia gene, it will show symptoms of achromatopsia. According to the above rule, if a male patient with chromophobia marries a normal female, he will have a normal son and will not develop the disease, while a daughter will be a carrier of the chromophobia gene and will not develop the disease, but may pass it on to her offspring. If a female patient marries a normal male, she will be a chromophobe if she has a son and a chromophobe carrier if she has a daughter. If both parents are chromophobic, they will be chromophobic regardless of whether they have a son or a daughter.