A: Laserarcs was specifically designed to automatically factor in corneal astigmatism changes resulting from 2.4 to 2.6 mm temporally located primary cataract incisions (femtosecond laser created or manually created). Experience dictates that 2.4 to 2.6 mm primary corneal incisions placed at +/- 10 degrees from the 0/180 (temporal) axis will induce around +0.2D of vertical astigmatism. Studies show a slight difference in astigmatism induction between manual and femtosecond laser incisions, but there’s not much difference. Laserarcs recommends tracking outcomes and adjusting the surgeon factor if personal primary incision induces more or less astigmatism than +0.2D.1