Color blindness or color deficiency is a condition in which a person is unable to distinguish or differentiate between a specific color, usually red, green or blue. Speaking to HT Lifestyle, Ophthalmologist Dr. Neetu Sharma said, “Red-green color deficiency is an X-linked recessive trait, meaning the green carrier responsible for color vision is passed on from a mother to her son. The X-chromosome he inherits from her – males have one x and one y in their genetic makeup. have chromosomes.
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Why is color blindness more pronounced in men than in women?
In an interview to HT Lifestyle, Dr OP Anand, Director of Ophthalmology and Senior Consultant, Acord, Super Specialty Hospital, Faridabad, said, “Approximately 8% of the male population is color blind and 0.5% of the female population is color blind. A major component of color blindness is a genetic disorder.
This is because women are immune to red-green color deficiency, the predominant form of color deficiency. Women have two z chromosomes, and even if they inherit one mutated x chromosome, the second normal x chromosome helps them have normal color vision. So most color deficiencies are in males and are congenital.
Dr. OP Anand said, “A male with an X-chromosome defective gene has defective color vision despite its recessive nature, whereas a female does not suffer from defective color perception due to its recessive nature but one is a carrier of the defective color vision.”
However, acquired color blindness affects men and women equally. Early symptoms include sudden color vision problems. This can happen for many reasons – some of which include the use of drugs such as sildenafil, ethambutol digoxin and some antimalarials and optic nerve diseases, diabetes, chronic alcoholic and some retinal diseases. In such cases, Dr. Neetu Sharma suggested an urgent check-up to pinpoint any serious underlying causes.