In color blindness, the cone cells produce an incorrect opsin protein that isn't sensitive to red (or is sensitive to a frequency close to green). Gene therapy would fix that, though it'd probably take a while for the brain to understand the new information.
The main reason this therapy isn't available is because the FDA has decided that the risks of gene therapy aren't worth the benefit of curing color blindness. I agree with that evaluation, but I also think mavericks should be allowed to try curing their own colorblindness (assuming they had informed consent and paid for the therapy themselves).
The main reason this therapy isn't available is because the FDA has decided that the risks of gene therapy aren't worth the benefit of curing color blindness. I agree with that evaluation, but I also think mavericks should be allowed to try curing their own colorblindness (assuming they had informed consent and paid for the therapy themselves).