Astigmatism is usually caused by congenital developmental abnormalities and poor eye habits.
Most patients with astigmatism are caused by congenital developmental abnormalities, which are related to the differences in corneal curvature in various directions and are usually present at birth. In a small number of patients, astigmatism is caused by poor eye habits, such as squinting and rubbing the eyes for a long period of time, which leads to changes in corneal morphology and astigmatism.
Astigmatism is a common type of refractive error, which means that the refractive power of the patient’s eyes is different in different directions, such as the difference in refractive power between the vertical and horizontal directions, resulting in the refractive system of the eye, light can not converge to form a focal point inside the eye, but rather the formation of a focal line, resulting in patients with vision loss, double vision and other discomforts.
It is recommended that patients with astigmatism should consult a doctor to assess their condition and follow the doctor’s instructions to choose the appropriate treatment. Patients should also pay attention to good eye habits to avoid astigmatism aggravation.