Fig. 2From: The effect of pterygium on front and back corneal astigmatism and aberrations in natural-light and low-light conditionsThe distribution of types of astigmatism of the back cornea in pterygium and control eyes (WTR:with-the-rule astigmatism, ATR: against-the-rule astigmatism, Oblique: oblique astigmatisam)Back to article page