Femtolaser arcuate keratotomy in the correction of corneal astigmatism during cataract surgery
Year: 2021, volume 17 Issue: №2 Pages: 342-347
Heading: Тhematic supplement Article type: Original article
Authors: Kulikova I.L., Timofeyeva N.S.
Organization: The S. Fyodorov Eye Microsurgery Federal State Institution, Chuvash postgraduate Doctors' Training Institute
Heading: Тhematic supplement Article type: Original article
Authors: Kulikova I.L., Timofeyeva N.S.
Organization: The S. Fyodorov Eye Microsurgery Federal State Institution, Chuvash postgraduate Doctors' Training Institute
Summary:
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 femtolaser-assisted 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, MCVA0.65±0.35 (pw<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.
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