What Is Astigmatism?
Astigmatism is an extremely common eye condition that affects both children and adults. It occurs when there is an imperfection in some part of your cornea, the clear tissue that covers your iris.
This skin disorder, also called erythema multiforme major, sometimes causes painful lesions on the eyelids. Stevens-Johnson syndrome can cause painful corneal blisters and even holes, leading to vision loss.