Causes of astigmatism скачать в хорошем качестве

Causes of astigmatism

A normal eye is naturally shaped round like a soccer ball. Astigmatism occurs when the cornea (the clear front cover of the eye) is irregularly shaped like a rugby ball or it can be due to the curvature of the lens inside the eye. Due to the different curves, the light rays coming through will focus on two points on the retina instead of one. This can result in blurry vision or double vision especially if the astigmatism is severe. Most children will have some degree of astigmatism early in life and it may improve or deteriorate as the eyes develop. High amounts of astigmatism, if left undiagnosed, is one of the main causes of amblyopia or lazy eye. Hence, this can result in poor reading and concentration at school. Majority of children have no complaints even when they have high astigmatism. This is not unusual as they accept poor vision as ‘normal’ since they have not seen anything in focus at all since young.