Functional implantation outcomes of different intraocular lens in cataract patients with a history of penetrating keratoplasty

Abstract

Objective. A comparative analysis of the functional outcomes of toric intraocular lens (IOL) implantation with the mechanism of wavefront formation during surgical correction of aphakia in patients after penetrating keratoplasty (PKP). Materials and methods. The prospective study included 65 eyes (65 patients) with a history of PKP who underwent cataract surgery. In group 1 (34 patients, 34 eyes), monofocal thoric IOL AcrySof IQ Toric was implanted. In group 2, toric IOL with wave front formation mechanism AcrySof IQ Vivity (31 patients, 31 eyes) was implemented. Results. In group 2, during the follow-up period of up to 6 months, the mean error of the spherical equivalent refraction (SE) from the expected result was 1.22 ± 0.875. In group 2, this value was significantly lower, 0.76 ± 0.582. No statistically significant difference was found between the mean values of the subjective cylindrical component in both study groups. Patients in group 2 also demonstrated a smoother defocus curve. Conclusion. Due to its design features, IOL with the mechanism of wavefront formation enables the achievement of a reliably smaller spherical equivalent refraction, a more accurate target refraction, and, accordingly, an optimal uncorrected visual acuity.