Astigmatism Diagnosis and Treatment
By Liji Thomas, MD
Astigmatism is a type of refractive inaccuracy in which the shape of the normally curved surface of the cornea is curved to different degrees in different areas. As a result of this abnormality, the light rays that enter the eye fails to converge at a focal point and instead comes to a focus at different focal points with a distance between them. This produces out-of-focus vision and the image formed on the retina is blurred. The person with astigmatism may perceive a clear image at one angle while attempting to focus on another point.
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