The accuracy of the trifocal IOL calculation using equivalent K-readings and total corneal power in different zones.

Purpose: To identify the equivalent K-readings and total keratometry zones that is optimally suitable for calculating the IOL spheroequivalent according to 7 formulas.

Methods: The study included 40 patients (40 eyes) who underwent uneventful femtosecond laser-assisted cataract surgery and refractive lens exchange (RLE) with implantation of a trifocal diffractive IOL (PanOptix, Alcon inc.).

[Comparative assessment of the accuracy of toric intraocular lens calculations].

Purpose: To compare the accuracy of toric intraocular lens (IOL) calculations on three modern toric calculators.

Material And Methods: The study comprised 35 eyes of 35 patients who underwent phacoemulsification with toric IOL implantation (EnVista Toric). Residual postoperative refractive astigmatism was calculated on three calculators: EnVista Toric Calculator, ASSORT Toric IOL Calculator and the Kane formula.

[Comparison of ultrasound and hydrodynamic parameters in phacoemulsification].

Unlabelled: Modern phacoemulsifiers have the widest selection of ultrasound parameters. Existing approaches to comparing the settings of the phaco machines have shortcomings and thus cannot be considered objective.

Purpose: To find a technique that would allow objective in vivo evaluation of various ultrasound and hydrodynamic parameters after performing phacoemulsification.

A novel method to compare phacoemulsification parameters in vivo: two halves of one nucleus.

Background: Comparison of different phacoemulsification parameters remains a frequently debated and methodologically challenging area. The focus of this study was twofold: (1) To suggest an accurate and simple in vivo model for comparison of phaco parameters with the use of femtosecond laser technology. (2) To compare parameters of intelligent phaco (IP) torsional and combination ultrasound modes using the proposed model.