Aim: To study the prevalence, type, and progression of astigmatism in Chinese preschool children, and its effect on refractive development. Methods: A cross sectional study of preschool children was ...

The next number on your prescription is the cylindrical correction or CYL. This concerns how much of an astigmatism you have. Astigmatism occurs when the cornea or lens of the eye is more curved ...

“I found out I have a severe astigmatism, and my vision is horrible. Without contacts, I can’t see unless I’m squinting, and that’s why my eyes used to look off in photos when I smiled.