Assessment of the Value of Astigmatism Generated by Two Models of Spherical Multifocal Lenses: Panoptix® by Alcon® and Acunex® Variomax® by Teleon® using the Toric Alignment Check Module of the Itrace Analyser

Abstract

Purpose: Assessment of the value of astigmatism generated by spherical multifocal lenses. Methods: Patients (39 eyes) after implantation of two models of spherical lenses with a different multifocal structure, i.e. PanOptix® by Alcon® and Acunex®VARIOMAX® by Teleon® were examined using the iTrace analyser, the Toric Alignment Check module. Results: In each case, patients undergoing implantation of spherical multifocal lenses were diagnosed with astigmatism generated by these lenses. Astigmatism ranged from 0.15 Dcyl to 1.82 Dcyl and differed in the value and axis from corneal astigmatism. Conclusion: Spherical multifocal lenses generate astigmatism, independently of the structure of the lens. The Toric Alignment Check module of the iTrace analyser should not be used to analyse visual defects in eyes with spherical lenses implanted due to the possibility of misinterpretation of the obtained results.