Abstract
PURPOSE: To compare the surgically induced astigmatism following chevron incision versus frown incision in MSICS. METHOD: The study was conducted from January 2012 to December 2012. 200 patients were selected of which 100 patients above the age of 50yrs, with soft cataracts, up to grade 2 nuclear sclerosis underwent MSICS with chevron incision and the remaining matched group underwent MSICS with frown incision. For all the patients incision site was chosen based on the pre-op keratometry readings and the incision length was 6mm. Patients' keratometry readings were taken at the end of 6 weeks following surgery and surgically induced astigmatism was calculated. RESULTS: Post operatively, the surgically induced astigmatism was 0.75D-1.0D, in the frown incision group versus 0.5D-0.75D, in the chevron incision group. CONCLUSION: The Surgically induced astigmatism with chevron incision is 0.25D-0.45D less than with frown incision.
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