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This document describes a study on preventing endothelial damage during cataract surgery. 79 eyes underwent cataract surgery using consistent marking of the refractive axis and implantation of transitional conic cylinder IOLs to improve astigmatism correction. A preoperative corneal topographic limbus marking was performed as a reference and correction of the axis of implantation referred to this mark. All eyes received an Ophtec Precizon Tooric IOL and were evaluated pre-operatively, post-operatively, and at 1 month for refraction. The consistent marking and transitional conic IOLs aimed to improve results of astigmatism correction and prevent endothelial damage during surgery.











































