Preoperative and postoperative evaluation of corneal astigmatism after pterygium operation using diamond Burr

The study was conducted with the objective to compare the visual acuity and astigmatismbefore and after pterygium operation using diamond Burr.Materials and Methods: This study was conducted as prospective follow up study on patients withprimary pterygium inducing visually significant astigmatism. Visual acuity, K reading, astigmatism wererecorded before surgery and at 1week, 6 week and 12 week following surgery whereas corneal clarity wasassessed post operatively. The pterygium remnant tissue over cornea was polished using a Diamond Burr.Result: Mean age of patients was 46.88 10.61 years. The study was comprised of 77.1% females.Mean BCVA (LogMAR) preoperatively was 0.260.19 whereas that at 12th week was 0.120.08 and theimprovement was statistically significant. The mean astigmatism also reduced significantly (pa significant improvement in K average and corneal clarity at various follow up was observed (pConclusion: Pterygium surgery with diamond burr application for corneal smoothing, significantlyimproves the visual acuity, corneal keratometry and pterygium induced astigmatism.Keywords: Diamond Burr, Visual acuity, Pterygium, Keratometry.