Adamski W, Chomicka A, Stodolska-Nowak A, Rzeszotarska A, Dmitriew A. Effectiveness of astigmatism correction and spherical power calculation using the Barrett formula and Alcon® Verion™ Vision Planner 3.1. Ophthatherapy [Internet]. 2018Nov.30 [cited 2024Nov.25];5(supl. 3):10-5. Available from: https://journalsmededu.pl/index.php/ophthatherapy/article/view/717