CORNEAL ASTIGMATISM BEFORE AND AFTER PTERYGIUM EXCISION
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to assess the effect of pterygium excision on corneal astigmatism by using orbiscan corneal topography. Patients and Methods:In this study 20 eyes of 20 patients complaining of primary petrygium. All patients were subjected to preoperative full ophthalmic examination and Orbiscan corneal topography was done preoperative then repeated one week and 8 weeks postoperative .The amount of astigmatic changes were recorded.