Vitamin A is closely related to vision. Once it is lacking, it will reduce people's sensitivity to low light, weaken their ability to adapt to sunlight, make them unable to see clearly when it is dark, and in severe cases, night blindness will occur.

the ability of vitamin a to synthesize retinol decreases, so be careful not to supplement vitamin a excessively. Every animal's liver, eggs, cream and cod liver oil are rich in vitamin a, and the carotene contained in plants can be converted into vitamin a in the liver after entering the human body. Red and yellow vegetables or fruits and green leafy vegetables all contain more carotene.

Extended information:

Precautions

1. Keep the skin clean

Always keep the skin of the face and hands clean, because there is a lot of static electricity on the surface of the computer screen, and the accumulated dust can be transferred to the exposed skin of the operator's face and hands, which is prone to ugly macula and pigmentation, and even cause skin lesions and influence in severe cases.

2. Correct posture

The sitting posture should be correct and comfortable when operating. The center of the computer screen should be installed at the same level as the operator's chest, and the distance between the eyes and the screen should be 4-5 cm. You should blink your eyes frequently or close your eyes for a while to adjust and improve your vision and prevent vision loss.

3. Combine work and rest

Move your hands, feet and torso outside the operating room, take a walk, do radio exercises, take an active rest, or do eye exercises and move your head indoors.

people's network-vitamin eye protection ABCDE

people's network -7 precautions are the most effective for eye protection.