The majority of chromophobia is a congenital X-chromosome linked recessive disorder and the patients are mostly male. A small number of acquired color vision abnormalities are seen in certain fundus diseases. Color weakness can be treated symptomatically with corrective lenses for color weakness, which can improve color discrimination to some extent. Achromatopsia is a visual phenomenon in which the ability to discriminate colors is weak. Clinical manifestations are: poor color discrimination, only when the color is more saturated to distinguish colors, or only when there is a large difference in wavelength to distinguish the change in hue. Red weakness and green weakness are more common, while blue weakness is rare. Red weakness has a poor ability to discriminate red; green weakness has a poor ability to discriminate green, and patients have difficulty recognizing, misreading, or failing to read a pseudochromatic chart when it is examined. The principle is: according to the principle of complementary color topography, special coating is applied on the lens to selectively allow the light of certain wavelengths to pass through, and by wearing color vision correction glasses, the colors that were not recognizable can be correctly recognized and the effect of color vision impairment can be corrected. Therefore, patients with color deficiency can improve their symptoms after wearing color deficiency corrective lenses, but they cannot be cured.