Femtolaser arcuate keratotomy in the correction of corneal astigmatism during cataract surgery

Purpose: analysis of the clinical and functional results of astigmatism correction using the developed algorithm during femtolaser-assisted cataract extraction. Material and Methods. 25 patients were operated on by femtolaserassisted cataract phacoemulsification with arcuate keratotomy according to the proposed astigmatism correction algorithm. On the 3rd day, after 3, 6 and 12 months, the indicators of uncorrected (UCVA) and maximally corrected visual acuity (MCVA), refractive and corneal astigmatism were determined. After 12 months, a graphical vector analysis was performed, efficiency, predictability and safety were evaluated. Results. 12 months after the operation, the indicators of UCVA were 0.60±0.16, MCVA 0.65±0.35 (рw<0.05). The cylindrical refraction component decreased from –1.89±0.87 to –0.85±0.26 (pw<0.05). The correction efficiency within the range of ≥0.5 was 90 %. The predictability of the cylindrical refraction component ±0.5 diopters was 68 %; ±1.0 diopters was 92 %. Graphic vector analysis revealed a decrease in the centroid size (0.24 ax 129° to 0.18 ax 103°). Conclusion. Correction of corneal astigmatism according to the proposed algorithm, including the calculation of parameters to the developed nomogram and compensation of cyclotorsia, allows to effectively correct astigmatism during femtolaser-assisted cataract phacoemulsification.