FP200 : Managing pre-existing astigmatism by femtosecond arcuate keratotomy.

Dr.KIRTI RANI, K19767

Femtosecond laser arcuate keratotomy in patients with pre-existing astigmatism for cataract surgery may have better outcomes in view of greater reproducibility of incision architecture. We performed penetrating arcuate keratotomy in 80 eyes of patients with astigmatism of 0.4 to 1.5 D at 80% depth using Donnenfeld normogram with limbal relaxing incision calculator(www.lricalculator.com). The mean pre-operative and post-operative astigmatism at 2 weeks and 3 months follow up were 0.84 +/- 0.27D, 0.65 +/- 0.31D(p<0.001) and 0.47+/-0.27D(p<0.001), respectively. The study concluded that penetrating arcuate keratotomy is an effective method of correcting pre-existing astigmatism in patients undergoing femtosecond laser assisted cataract surgery, but may require further refining of normograms.