The eye is the organ of vision through which we see the world around us. In the front of the eye is the iris, which regulates the amount of light entering the eye. In the iris are muscles, in bright light they contract, reducing the aperture of the pupil and thereby reduce the light flux penetrating the eye. In twilight, the muscles relax, the opening of the pupil increases accordingly and lets more light. Collects the light penetrating the eye and directs it to the retina - the lens. It is with the help of the lens that the light stream focuses on the retina, creating an image on it. To view objects that are at a different distance from the eye, the eye muscles deform the lens, changing its curvature, so that a clear image appears on the retina of the eye.
If a person does not clearly see objects distant, then this is an eye disease - myopia. And if on the contrary, poorly sees objects that are at close range - farsightedness. There is one more eye disease - astigmatism. With astigmatism, the irises of the left and right eye are twisted in different ways, so the rays that emanate from one point can not focus. The main factor in the normal vision of an object is not the state of the lens, but the muscular effort applied to examine the object. Therefore, you should not strain your eyesight to consider this or that object. People with normal vision do not try to focus their eyes on a certain point, if the subject is not clearly visible, then the view automatically switches to an object that is seen more clearly. Any mental condition can cause tension in the eye muscles. With the strain of the eye muscles, the shape of the eyeball changes, and the eye lacks blood supply. We can say that the health of the eyes depends on sufficient blood supply, and the blood supply depends on the state of the psyche. When a person is in a calm, relaxed state, his brain is supplied with enough blood, the optic nerve and visual centers normally feed on blood. And if a person's mental condition worsens, he is in a nervous, excited state, then blood circulation is disrupted. The optic nerve and visual centers cease to receive blood in the required volume. That is, a person himself is able to worsen blood circulation, because it can cause thoughts that are fraught with stress.
Conclusion - any stressful condition that a person experiences, leads to poor eyesight. A healthy eye in a relaxed state, when examining distant objects, as it flattened, and when looking at objects near - lengthens along the axis. Stress prevents the eye from changing its shape. To help the eye muscles, people are armed with glasses. As a result, the ocular muscles weaken even more. To preserve one's abilities, it is necessary that the body be in an active state.
To maintain normal vision, you need to perform gymnastics for the eyes. Exercises must be performed systematically. Often relax the eye muscles. To do this, cover the eyelids for a few minutes, relax, remember something pleasant, a beautiful seascape or a landscape area. Proper nutrition is very important for normal vision. Food should be rich in vitamins, especially vitamins A and D. Vitamin A is found in butter, in liver and fish oil, in carrots, spinach, persimmons, etc. Lack of vitamin A leads to poor vision at dusk (night blindness). Vitamin D is found in egg yolk, in herring, butter. It is necessary to walk more often outdoors, especially in the daytime from 10 - to 16 hours, since it is at this time that the intensity of the ultraviolet rays necessary for good vision is observed. To improve the eyesight, it is recommended to drink carrot juice, and also to eat berries of mountain ash. You can not look at one object or on small objects for a long time. And if there is a need for this, you need to periodically relax your eyes. The folk remedy for disturbance of vision on nervous soil is the following method: boil a chicken egg, cut along and the hemisphere of the protein must be applied to the diseased eye so. To the protein touched only the skin around the eyes, and the eye itself does not.
Try not to succumb to stressful situations, take reality as it is. Enjoy life and all its manifestations. Be sure to relieve the mental stress, and the tension that emerged during the day, using exercises to relax the eye muscles. If all the rules are followed, vision can not only be preserved, but even improved. Now you know about whether vision can worsen on the nerves. Be esoteric and protect your life from unwanted nervous disorders.