Corneal surgically induced astigmatism in resident surgeons.

To evaluate surgically induced astigmatism (SIA) in resident surgeons in their first year of performing cataract surgery, a retrospective study was conducted involving three resident physicians from July 1, 2019, to June 30, 2020. Preoperative and postoperative corneal measurements were taken with the IOLMaster 500 and Pentacam. Mean SIA and centroid were determined with the Koch-Wang Excel spreadsheet.

Accuracy of two devices and three different calculation methods for predicting residual astigmatism after intraocular lens implantation.

This study examined how different methods of biometric measurement, types of intraocular lens calculation, and levels of surgeon experience affected predicted postoperative astigmatism with toric intraocular lens implantation. The error in predicted residual astigmatism was determined using the IOL Master 500 and Lenstar LS 900 devices and was calculated by the Alcon toric calculator, Alcon toric calculator with Baylor nomogram, and Barrett toric calculator. Results were reviewed from 147 eyes of 125 patients.