The causes of astigmatism may include congenital astigmatism, astigmatism caused by bad eye habits, and astigmatism caused by diseases in some patients.
1. Congenital astigmatism: usually congenital astigmatism is mainly caused by genetic factors leading to congenital defects of the eyeballs, during embryonic development, the eyeballs will have congenital defects, if they occur in the cornea, so that the cornea has an irregular morphology, and it is impossible to focus on the retina for a clear image, thus forming astigmatism.
2. Bad eye habits: not to develop good eye habits, often ignoring the protection of the eyes. Prolonged use of electronic products, often rubbing the eyes, etc., will easily form astigmatism.
3. Diseases: Suffering from eye diseases, such as keratitis, conical cornea, etc., will affect the shape of the cornea, resulting in its irregularity, thus forming astigmatism.
When astigmatism is formed, you should go to the ophthalmology department for examination in time and take appropriate measures according to the degree of astigmatism.