There is a fundamental difference between color weakness and amblyopia. Color weakness is a genetic disorder that refers to an abnormality in the ability to distinguish color vision, that is, the ability to distinguish red, green, or blue, and this fine color vision may be reduced from that of others. This condition is often inherited from a father or mother, or grandfather, grandmother, grandmother, or grandfather who has a chromatic weakness gene. Amblyopia is not a genetic disease, but a developmental abnormality of the visual function, mainly because the corrected visual acuity does not reach 0.8, which is considered amblyopia. Amblyopia can be treated in children, usually before the age of 8 years old, can be treated accordingly, before the age of 6 years old children treatment effect will be better. However, there is no treatment for achromatopsia because it is a genetic disease and can only be prevented by genetic screening in the next generation.