Color blindness is an incurable disease, but it can be corrected by wearing lenses. Color blindness itself belongs to autosomal hereditary disease, with red-green color blindness and color weakness being more common. Although this disease cannot be cured, it can be corrected by wearing special color blindness corrective lenses to achieve the purpose of being able to recognize colors without affecting the normal life and work at the same time. The principle of these color blindness corrective lenses is to transmit or reflect light of different wavelengths by means of a special film coated on the lens of the patient through the optical antagonism of the complementary color. When color blind patients look at colored objects through these special lenses, they can recognize them correctly, thus achieving the purpose of color vision correction.