Journal article

Pterygium-induced corneal astigmatism.

Richard G Lindsay, Laurence Sullivan

Clin Exp Optom | Published : 2001


A significant degree of corneal astigmatism can be induced by the encroachment of a pterygium onto a cornea. The pterygium generally causes with-the-rule corneal astigmatism that is hemimeridional on the side of the pterygium. There is a significant correlation between the extension of the pterygium onto the cornea and the amount of induced astigmatism. However, there is a poor correlation between pterygium-induced astigmatism measured topographically and that measured by manifest refraction. Successful pterygium surgery will reduce pterygium-induced refractive astigmatism and improve visual acuity. This paper outlines the management of a patient with an advanced pterygium, in whom a large d..

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