RT Journal Article
T1 Tolerance to residual astigmatism of an isofocal intraocular lens
A1 Pérez-Sanz, Lidia
A1 Vega, Fidel
A1 Azor-Morón, Juan Antonio
A1 Cuellar, Fátima
A1 Millán, María Sagrario
A1 Garzón Jiménez, Nuria
AB Purpose: To evaluate the impact of residual astigmatism on the optical and visual performance of an enhanced-monofocal isofocal intraocular lens (EM Isopure, BVI medical, Belgium) compared to a monofocal one (Micropure, BVI medical, Belgium).Methods: Laboratory investigation and prospective, comparative and randomized clinical study. Optical quality was assessed on an optical bench for 2.0, 3.0, and 4.5 mm pupils. The effect of residual astigmatism was investigated from through-focus images recorded with increasing amounts of regular positive astigmatism induced with a deformable mirror. To evaluate the impact of residual astigmatism, 28 eyes of 28 patients were randomly assigned to either group. Residual astigmatism was induced with positive and negative cylinder lenses at 90 and 180°. Visual acuity (VA) was measured at each step.Results: The optical performance of both IOLs was quite similar for 2.0 and 3.0 mm pupils. For 4.5-mm pupil, the EM Isopure showed a significant reduction of its optical quality in comparison with the monofocal IOL. When visual performance was evaluated, no statistically significant differences were found for any power of induced astigmatism. More differences were found when positive induced astigmatism was compared within each group, and VA was better when the astigmatism was induced at 180° vs. 90°. The greatest differences were found for and induced positive astigmatism of + 1.50D (p = 0.009 for Isopure and p = 0.023 for Micropure).Conclusions: The tolerance to residual astigmatism of the EM Isopure lens is similar to that of a reference monofocal lens with pupils up to 3.5 mm.
PB Springer
SN 0721-832X
YR 2024
FD 2024-04
LK https://hdl.handle.net/20.500.14352/107439
UL https://hdl.handle.net/20.500.14352/107439
LA eng
NO Pérez-Sanz L, Vega F, Azor-Morón JA, Cuellar F, Millán MS, Garzón N. Tolerance to residual astigmatism of an isofocal intraocular lens. Graefes Arch Clin Exp Ophthalmol. 2024 Apr;262(4):1169-1180. doi: 10.1007/s00417-023-06305-9. Epub 2023 Nov 11. PMID: 37950754.
NO Received 08 June 2023; Revised 12 October 2023; Accepted 23 October 2023; Published 11 November 2023; Issue Date April 2024.This study was funded by the Spanish Agencia Estatal de Investigación (grant number PID2020-114582RB-I00/AEI/10.13039/501100011033).
NO Ministerio de Ciencia e Innovación (España)
DS Docta Complutense
RD 10 oct 2024