Is congenital night blindness hereditary

summary

Congenital night blindness is a kind of night blindness, which is poor or completely invisible in night vision or dark environment. Commonly known as "bird blindfold", in the night or dim light environment, blurred vision, movement difficulties, known as night blindness. Let's share the related knowledge of congenital night blindness.

Is congenital night blindness hereditary

First, congenital night blindness is a kind of congenital eye disease caused by genetic factors. The root cause of congenital night blindness is the lack of retinal rod cells to synthesize rhodopsin or the pathological changes of rod cells themselves.

Second: congenital night blindness is divided into two kinds, one is congenital static night blindness, the other is congenital progressive night blindness. In addition to the blindness of common night blindness, the symptoms of the former are abnormal in vision, visual field and fundus, which are caused by the dysfunction of rod ladder rhodopsin synthesis determined by genetic factors and remain unchanged for life without special treatment for night blindness.

Third: the symptoms of the latter are often complicated with other hereditary retinal diseases. In addition to night blindness, vision, visual field and fundus are all changed. With the continuous progress of the disease, vision gradually decreases until blindness, and the treatment is often difficult to work.

matters needing attention

The main characteristics of congenital night blindness are as follows: first, the number of male patients is more than that of female patients, and even it is difficult to find female patients in some diseases, because there is little chance for two chromosomes with recessive pathogenic genes to touch each other. Second, if the patient's man marries a normal woman, he will not have any more children with the disease, but his daughters are carriers of the disease causing gene. If the sick man marries a woman carrying the disease causing gene, half of the sons and daughters with the disease can occur; if the sick woman marries a normal man, all the sons born to the sick woman are carriers of the disease causing gene, and the daughters are carriers of the disease causing gene.