Aims and objectives: To evaluate prospectively the corneal refractive status before and after pterygium surgery and its relationship with pre operative pterygium size.
Design: Prospective, non randomized study.
Materials and Methods: This study was carried out on 50 eyes of 46 patients with primary pterygium in one or both eyes. Objective refraction, subjective refraction, Keratometry and BCVA were assessed pre operatively, and at 1, 3, 6 months post operatively.
Results: Pre operative mean astigmatism was maximum in horizontal meridian than in oblique and vertical meridian. Mean size of pterygium was 2.59mm. The magnitude of pre operative mean astigmatism was 1.38D, which was seen to be increasing with increase in size of pterygium. Mean pre operative refractive astigmatism of 1.13D decreased to 0.22D, 0.16D and 0.13D after 1, 3 and 6 month post operatively which were statistically significant.
Conclusion: This study confirms that pterygium excision induces a reversal of pterygium-related corneal flattening. A significant decrease in astigmatism and improvement in visual acuity is observed post-operatively.
Astigmatism, Pterygium Surgery