Some problems with night blindness, what about night blindness

Buy vitamin B to eat, 200mg a day

1 Pinyin 2 Annotations.

Attached: 1 **Acupuncture points for night blindness.

yè máng zhèng

Night blindness is a severe manifestation of decreased sensitivity to low light and prolonged dark adaptation*. It is mostly caused by VA deficiency, and there are also people with congenital night blindness. The main symptom is almost normal vision during the day and blurred vision at dusk.

Because some birds such as sparrows are born with night blindness, they are also called "finches", "finch blindness", and "finch eyes". The main mechanism by which VA deficiency causes night blindness is the presence of cone cells on the retina that produce color sensation in bright light and rod cells that produce scotopic vision in low light.

One of the main factors that determine the quality of scorea and the speed of dark adaptation is the concentration of rhodopsin (rod cytochrome) in the blood. The synthesis and decomposition of rhodopsin are regulated by light; There is more decomposition than synthesis under strong light, and more synthesis than decomposition under low light, so that its concentration gradually reaches a certain level required for light sensitivity, and the time taken to reach this level is the time of dark adaptation. Because VA is the "raw material" of rhodopsin, when VA is deficient, rhodopsin cannot be replenished enough, resulting in a decrease in blood concentration, resulting in rod cell insufficiency, decreased sensitivity to weak light, prolonged dark adaptation time, etc., and night blindness symptoms.

Supplementation with a moderate amount of VA can be effective in ** night blindness caused by VA deficiency. As early as the Tang Dynasty, China has used pig liver and other VA rich foods ** "Sparrows".

Wind pool faintness, salivation, syncope, shoulder and back pain, dizziness, cold and flu, night blindness, stiff neck, urticaria, erysipelas, aurmoa, amenorrhea, epilepsy, hypertension, ,..

Impotence, myopia, keratitis, facial nerve paralysis, facial muscle spasm, forehead pain, night blindness, ophthalmic diseases, etc., for trigeminal neuralgia, eye fatigue and other symptoms.

Extracanthal juvenile myopia, cataract hall, glaucoma, vision loss, dacryocystitis, night blindness, etc. The alias of the pupil: Outer canthus ("The Yellow Emperor's Neijing Su Wen Qi Fu.

Pupil juvenile myopia, cataract, glaucoma, vision loss, dacryocystitis, night blindness, etc. The alias of the pupil: Outer canthus ("The Yellow Emperor's Neijing Su Wen Qi Fu. Frontroom.

People with night blindness can distinguish night blindness from the following conditions:

1. Symptoms of congenital night blindness. It is inherited from congenital heredity, such as retinitis pigmentosa, rod cell dysplasia, and loss of the ability to synthesize rhodopsin, so night blindness occurs.

2. It is often caused by retinal rod cell dystrophy or its own lesions. Commonly seen in diffuse choroiditis, extensive choroidal ischemic atrophy, etc., this type of night blindness gradually improves with the recovery of the disease with effective treatment, which is one of the symptoms of night blindness.

3. In addition, the symptoms of night blindness in local people will also have the symptoms of night blindness in children, and there will also be yellow muscles, thin hair, normal vision during the day and no way to see things at night or in dim places, and gradual decline in vision, accompanied by dizziness and weakness, chills and cold, poor eating, impotence, paleness, fine weakness and other symptoms.

4. Symptoms of temporary night blindness. Night blindness occurs due to a lack of vitamin A in the diet or due to certain digestive disorders that affect the absorption of vitamin A, resulting in retinal rod cells not having the raw material to synthesize rhodopsin. This kind of night blindness is temporary, as long as you eat more pork liver, carrots, cod liver oil, etc., you can supplement the deficiency of vitamin A, and it will be cured soon.