What symptom does night blindness have

summary

Night blindness is when in dark conditions or at night, vision will become poor or even can't see anything. Night blindness is a congenital eye disease caused by genetic factors. So, let's talk about the symptoms of night blindness.

What symptom does night blindness have

First, the skin of patients with night blindness is keratinized and rough, and the resistance of the whole body is reduced. A small ulcer on the cornea can cause suppurative inflammation of the whole eyeball if it is slightly infected. In severe cases, it can lead to blindness. Ancient Chinese medical scientists have long found that bovine liver can cure this disease and improve eyesight.

Second: people suffering from night blindness have increased osteoclast activity, leading to bone decalcification, increased bone fragility, growth, thickening of long bones and bone joint pain. Irritability, fatigue, headache, nausea, vomiting, muscle weakness, restlessness. Loss of appetite, abdominal pain, diarrhea, hepatosplenomegaly, jaundice.

Third: decrease of hemoglobin and potassium in blood, prolonged coagulation time and easy bleeding. The relative risk of abnormal birth was 25.6 when pregnant women took a large dose daily in the first trimester of pregnancy. Except for the livers of mammals and fish, the intake of Vit a in food generally does not cause poisoning.

matters needing attention

If the phenomenon of night blindness, can take vitamin A, because vitamin A affect people's visual ability, food can eat high vitamin a content of carrots. At the same time, try to avoid driving. When going out in the daytime, if the sun is too strong, you should wear sunglasses. So as to improve the condition of night blindness.