Tuesday, June 23, 2020

What nutrients do the eyes need?

The function of rod cells on the protein retina predominates scotopic vision, while pyramidal cells predominately visual vision. Rod cells are sensitive to faint light because they contain a special visual quality. Visual quality is synthesized by protein and vitamin A. Lack of it will cause night blindness, cataract and other eye diseases.

Vitamin A

Visual quality is a complex protein containing vitamin A derivatives. If vitamin A is deficient or inadequate, it will make the regeneration of visual quality slow and unsound, which will reduce the dark adaptation function and affect night vision. It will also cause the corneal epithelium to fall off, thicken and keratinize, making this original transparent film change. Be opaque.

Vitamin B1

It is an important substance to maintain and participate in the function and metabolism of nerve (including optic nerve) cells. If it is lacking or insufficient, it is easy to dry the eyes and even cause inflammation of the optic nerve.

Vitamin C

Vitamin C in the eye lens is significantly higher than other tissues and is an important nutrient component of the lens. If the intake is insufficient, it often makes the lens cloudy and is one of the important causes of cataracts.


Calcium is a "messenger" in nerves and participates in all kinds of nerve impulses. Nerve cells (including the optic nerve) lack calcium and are prone to visual fatigue and distraction.


Can enhance the sensitivity of the optic nerve, zinc deficiency will affect the absorption of vitamin A in the body.


Among the various tissue cells of the human body, the selenium content of the eye is the highest, which is an important trace element for maintaining vision.

In addition, tea is rich in carotene, vitamins B1, B2 and vitamin C, and contains a variety of trace elements. "Tea can catch sight" is almost known to everyone. Therefore, drinking tea can protect eyesight, and it is also commonly used to treat some eye diseases. For example, taking 25 grams of green tea decoction to clarify, used for eye washing, can treat blepharitis and acute infectious conjunctivitis.

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