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

A: If the primary or secondary incisions overlap with arcuates, the user should determine if proceeding with the planned arcuate incisions warrants a decision to either relocate, or elect to turn off the overlapping incision (primary or secondary).

A: Surgical success depends on accurate pre-surgical measurements, consistent surgical planning, and clinical experience. It is important to choose a device and consistently use the keratometry from that device for your arcuate calculations.

A: The Laserarcs nomogram was validated by a retrospective clinical study that assessed the efficacy and safety of the Laserarcs nomogram, in reducing astigmatism among cataract patients. The results were published in a peer reviewed publication. Mean reduction in cylinder was 81.4 ± 47.7% and the residual cylinder was ≤ 0.5 D in 90%, 0.25 D in 72%, and 0 D in 58% in a sample of 50 patient eyes who underwent uncomplicated cataract surgery with arcuate incisions and the use of Laserarcs nomogram.2

A: No descriptive information is saved. In fact, it is not required to enter the patient’s name to generate a treatment result from the calculator.