Regardless of myopia and hyperopia, but usually in combination with them, a large percentage of the normal population has astigmatism. This happens when the cornea has more oval rather than spherical form. The different curvature of the cornea each time causes deformation of objects that are not perceived clearly.
Normal Eye Eye with Astigmatism
Risk factors, causes and types.
Although there is no known cause for astigmatism, heredity and problems during embryogenesis are known factors. There are two types of astigmatism: the regular one that is corrected with glasses and the irregular.
Symptoms, diagnosis and risk factors
The main symptom of astigmatism is blurred vision both near and at a great distance.
Use of tore contact lenses or glasses to improve vision and correct it with laser.