Recently, more and more people complain of poor eyesight, among which a considerable part are young patients. This is not surprising, because in modern life, the eyes are subjected to enormous loads. Therefore it is very important to have regular examinations with an ophthalmologist - at least once a year, in time to recognize the pathology.
Types of poor vision
Visual disorders can be divided into two groups:
- Organic - pathology, in which there are structural changes in the organs of vision (cataracts, atrophic lesions of the optic nerve of vision, tumor lesions, blepharitis, conjunctivitis, etc.).
- Functional - are caused by changing the stroke of light rays, which, penetrating into the eyes, form an image on the retina (hyperopia, myopia, astigmatism , strabismus, etc.).
Causes of poor vision
The main factors leading to visual impairment are:
- congenital anomalies, heredity;
- disturbances in the optical system of the eyes;
- excessive visual load;
- general mental, physical or mental overwork;
- transferred infectious diseases;
- endocrine pathologies;
- pathology of the cervical spine;
- dryness of the eye mucosa;
- worsening of blood circulation;
- bad habits;
- unfavorable ecological situation;
- occupational hazards, etc.
Symptoms of poor vision
Disturbing symptoms, which should serve as a reason for going to the doctor and conducting a detailed examination, are:
- blurred vision;
- double vision in the eyes ;
- the appearance of shrouds, flies, sparks in front of the eyes;
- inability to recognize small parts;
- the impossibility of focusing on certain subjects;
- soreness in the eyes;
- fast eye fatigue;
- violation of the perception of colors, etc.
How do people with poor eyesight see it?
The fact that the image of the surrounding world appears before the eyes of people with poor eyesight, depends on the type of pathology and degree of damage they have. For example, with myopia, distant objects are seen as vague, and objects that are near are perceived clearly. And people with astigmatism see objects at different distances blurred, stretched in a horizontal or vertical plane. With some pathologies, there is a worsening of the side vision, visual illusions.