The cause of astigmatism
The cornea and lens are flat, sphericalsurface. Their deformation leads to the fact that the refraction of the rays in the eye is disturbed. They are not focused in the center of the retina, but before and after it, resulting in astigmatism. This is a disease in which the child sees everything around him fuzzy, blurry.
Untreated astigmatism - the cause of strabismusPhoto: Getty Deformation of the lens and cornea can be congenital. It arises due to failures in the development of the fetus at 3–6 weeks of pregnancy or is inherited by the baby. Acquired astigmatism may appear for the following reasons:
- eye injury, due to which the lens or the cornea has suffered;
- unsuccessful ophthalmologic operation, improperly applied sutures;
- corneal inflammation;
- dystrophic diseases that lead to corneal thinning;
- deformation of the upper jaw and orbits.
Acquired astigmatism and adults are exposed.
How to determine that a child has astigmatism
Regardless of the cause of astigmatism, violationVision is its main symptom. But it does not appear immediately. Only after the load on the eyes visual acuity disappears, small objects become blurry. Therefore, the symptoms are taken for banal fatigue. Only with the development of the disease, vision begins to deteriorate. Manifestation of congenital disease in preschool age, less often in the lower grades. Acquired astigmatism begins to develop immediately after the event that affected the deformation of the lens or iris. Symptoms of astigmatism:
- headache;
- eye redness;
- unpleasant sensation in the superciliary area;
- blur of the picture;
- feeling of sand in the eyes.
In addition, the child may be confused letters, squintingand move the lower eyelid away. There are more than 10 types of astigmatism. Depending on this and the degree of neglect of the disease, treatment is prescribed. Lighter forms of deformation are corrected by wearing lenses or glasses, complex ones have to be operated on. Astigmatism is a disease that is difficult to notice. The child does not always complain of visual impairment, other symptoms are non-specific. But it is extremely dangerous to launch it, the consequences will either complicate the treatment or lead to irreversible processes. That is why it is important to consult a doctor even with the slightest problems with vision. It is also interesting:
