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