What is night blindness

Night blindness means that your vision is very poor in a dark environment or at night, or even you can't see anything at all. It is beyond being busy in Ye County or Huaguang City thinking about Wang, which is a difficulty that causes night blindness. You must check it in time in daily life, pay attention to whether there is any situation, the purpose of drying discounts and the phenomenon of multiple windows in marriage. How to dry the economic and trade, dimness will cause such symptoms and at the same time he is treating it according to different symptoms.

But this month we are mainly busy with food. A lack of vitamin A in the diet or certain digestive system diseases affect the absorption of vitamin A. Acquired night blindness is mainly caused by lesions of the retina itself, while congenital night blindness is mainly caused by congenital hereditary eye diseases.

Temporary night blindness

Due to a lack of vitamin A in the diet or certain digestive system diseases that affect the absorption of vitamin A, the retinal rod cells lack the raw materials for synthesizing rhodopsin, resulting in night blindness. This type of night blindness is temporary. As long as you eat more pork liver, carrots, cod liver oil, etc., you can replenish the deficiency of vitamin A and you will recover soon.

Acquired night blindness

It is often caused by malnutrition of retinal rod cells or their own lesions. This night blindness is common in diffuse choroiditis, extensive choroidal ischemia and atrophy. It will gradually improve with effective treatment and recovery of the disease.

Congenital night blindness

It is a congenital hereditary eye disease, such as retinitis pigmentosa, which causes rod cell dysplasia and loss of the ability to synthesize rhodopsin, resulting in night blindness.

The above are common phenomena of night blindness. To prevent night blindness, you must eat more foods rich in vitamin A and eat some digestive system diseases that affect the absorption of vitamin A. Acquired night blindness is mainly caused by lesions of the retina itself. If the condition is serious, you should stay in bed at night and eat more foods rich in vitamin A.