It probably does not make sense to talk about how important normal vision is for a person. And not only in his professional activities. In everyday life, in ordinary everyday life, a visually impaired person faces the same problems as at work.
Decreased visual acuity makes life uncomfortable. The danger lies in the fact that if you do not consult a specialist (ophthalmologist) in time, you can miss the time to diagnose a serious disease, which can lead to complete blindness.
Most often, a decrease in visual acuity indicates changes in the eyeball. For example, in far-sighted people, the eyeball is flattened, and in nearsighted people it is oblong. The ability of the lens to focus on the resulting image is lost. Such changes are successfully corrected with the help of points. For more than ten years, ophthalmologists around the world have been practicing laser correction of myopia. Interestingly, hyperopia in newborns is the norm.
With violations of some functions of the brain, visual acuity may decrease. People suffering from migraine attacks often report visual impairment. The effects of a brain injury also affect vision.
I must say about temporary visual impairment. This phenomenon occurs with insufficient blood supply to the vessels of the brain. If for some reason a person does not eat for a long time, his blood glucose level drops sharply, as a result of which visual acuity is impaired.
There are symptoms, upon detecting which, a person should immediately contact an optometrist. One of these serious symptoms is the appearance of light flashes, stars or stripes with closed eyes. Such symptoms can occur with retinal detachment. In addition, a decrease in the field of view, the appearance of a dark spot in the field of vision should be alarming .
During natural aging, the lens of the eye and its vitreous body become cloudy, this causes a “veil before the eyes” of a person. It is impossible to prevent or stop this process. Often, clouding of the lens can be caused by metabolic disorders, it is also observed with infectious diseases, with cataracts.
If visual acuity is violated - this is a serious reason to visit an oculist. Timely assistance is especially important in cases of suspected detachment.
retina or eye injury. An optometrist will examine your eyes using a slit lamp, microscope, or ophthalmoscope; if necessary, measure eye pressure. These examinations are absolutely painless.
If for further examination it is necessary, the doctor will instill medicine in the eyes to dilate the pupils, which will allow you to carefully check the condition of the fundus. But you should be aware that after such a procedure it is impossible to read, write and drive a car for several hours, so you need to take care in advance of your dismissal on the day of the examination.
Visual acuity testing should be done at least once a year. Especially if a person wears glasses. Incorrectly selected glasses can worsen vision even more and faster.