Open AccessEffect of decentration, tilt and rotation on the optical quality of various toric intraocular lens designs: a numerical and experimental study
Author(s) -
Jesús Pérez-Gracia,
Jorge Ares,
Francisco J. Ávila,
Laura Remón
Publication year - 2022
Publication title -
biomedical optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.447045
Subject(s) - tilt (camera) , optics , intraocular lenses , rotation (mathematics) , ray tracing (physics) , intraocular lens , spherical aberration , centration , lens (geology) , cylinder , optical axis , optical rotation , materials science , physics , mathematics , geometry
Toric intraocular lenses (T-IOLs) may lose their optical quality if they are not correctly positioned inside the capsular bag once implanted. In this work, T-IOLs with cylinder powers of +1.50, +4.50 and +7.50 D and differing degrees of spherical aberration have been designed, manufactured and tested in vitro using a commercial optical bench that complies with the requirements of standard ISO 11979-2. Moreover, the effect of tilt and rotation on optical quality was assessed by means of numerical ray tracing on an astigmatic eye model, while the effect of decentration was evaluated numerically and experimentally.