Everyone should take care of their eyesight. Prevention of vision involves a set of measures aimed at maintaining normal visual function, at preventing various diseases of the organs of vision. Prevention of vision involves following several rules.
First of all, you need to pay attention to the conditions when reading.
So, while reading, the light source should be above and slightly behind the face. In other words, the light should fall on the text as if from over the shoulder. You cannot read if the light is directed directly into the face.
Reading lighting should be moderately bright. In dim light and with very bright illumination, you should not read, as your eyes will be overstrained. If there is a question about the location of the writing table, then it must be placed in such a way that the light source is located on the left side.
Unnatural light sources, such as a sconce or table lamp, should be covered with shades, as direct artificial light rays can injure the eyes with harsh light. If a person reads under the light of a table lamp, then the main lighting of the room should remain on, but the intensity of the lighting should be reduced if possible.
Too intense light blinds the eyes, becomes the cause of eye strain, as a result of which the eyes get tired quickly. In addition, it is harmful to read, for example, in a driving car, as the text is shaken at different distances from the eyes.
In the complex of vision prevention, it is very important to observe the correct distance between the eyes and the text, which should be at least thirty centimeters. When looking at something from a close distance, the eye muscles tense, and the eyes again get tired.
Modern society cannot imagine its life without computers. But, unfortunately, computers not only make our life easier, but also harm our eyes, especially for those people who constantly work at the monitor. To relieve fatigue and eye strain when working at a computer, it is recommended to perform a few simple exercises.
During operation, the computer monitor should be located approximately at arm’s length. In addition, the monitor should be positioned on the desktop so that, looking up, you can see everything in the room. After forty minutes of working at the computer monitor, you need to take a break, do light exercises, for example, frequent blinking, during which the eyes relax and moisturize the secretions of the lacrimal glands.
To prevent such visual impairments as myopia, you must expose yourself to ultraviolet rays. In the case of a shortage of ultraviolet rays, a violation of the metabolism in the body of phosphorus and calcium occurs. For this reason, the adaptive capacity of the eyes is reduced. Under the influence of the sun’s rays, vitamin D in the cells of the skin becomes active and normalizes the correct absorption of phosphorus and calcium compounds in the body.
An important function in the prevention of vision is performed by a proper balanced diet, which should include the required amount of vitamins, in particular, “eye” vitamins A and D. Vitamin D is found in foods such as beef liver and sea herring, egg yolk and natural butter.
Vitami A is extremely important for vision, as it is responsible for the eye’s ability to see at dusk. With a lack of this vitamin, the clarity of vision is disturbed, the skin loses its tone and becomes vulnerable to inflammatory processes. Vitamin A is found in large quantities in cod liver, cream and chicken eggs. There is also such a substance as provitamin A, called carotene. Carotene is essential in the human body for the synthesis of vitamin A.