The causes of color weakness are mainly divided into two kinds, including congenital factors and acquired factors.
1. Congenital factors: most of the color weakness is caused by congenital heredity, which is X-chromosome chain recessive heredity. If both parents are weak in color, the children have a higher chance of being weak in color. If the father is weak and the mother is normal, the son is normal and the daughter may be a carrier.
2. Acquired factors: For older people, color weakness can be caused by a gradual decline in the ability to discriminate colors. For optic nerve atrophy, retinal detachment and other retinal diseases, corneal leukoplakia, cataracts and other refractive interstitial clouding, may cause patients with color weakness. Meanwhile, systemic diseases such as diabetes, chronic alcoholism, leukemia, etc. may also cause a decrease in the ability to distinguish colors.
In addition to the above factors, the application of drugs affecting color vision, exposure to carbon disulfide or chemical fertilizers, etc., may cause color weakness in some patients.
It is suggested that people with color weakness should undergo further detailed examination to identify the cause of the disease and then take effective treatment measures according to the doctor’s instructions, so as to improve the color weakness and the quality of life.