Astigmatism. It happens when your cornea the clear front layer of your eye or lens an inner part of your eye that helps the eye focus has a different shape than normal. Trauma to the cornea can cause alteration of structure leading to irregular astigmatism.
Astigmatism is measured in diopters. Larger amounts can cause distorted vision eye discomfort and headaches. Manifest astigmatism is the vectorial sum of anterior corneal toricity and internal astigmatism.
When light enters a perfectly spherical lens like a basketball it refracts or bends evenly.
Astigmatism is an imperfection in the curvature of your eyes cornea or lens. A family history of astigmatism or other eye disorders such as. People with a measurement of 15 or more typically need contacts or eyeglasses to have clear vision. Myopic astigmatism is a condition where your astigmatism bends the light into your eyes in a way that the rays of light merge in front of the retina.
