000147798 001__ 147798
000147798 005__ 20250103153614.0
000147798 0247_ $$2doi$$a10.1371/journal.pone.0311566
000147798 0248_ $$2sideral$$a141200
000147798 037__ $$aART-2024-141200
000147798 041__ $$aeng
000147798 100__ $$aGargallo, Diana$$uUniversidad de Zaragoza
000147798 245__ $$aThe influence of rotational error and axial shift of toric intraocular lenses on residual astigmatism
000147798 260__ $$c2024
000147798 5060_ $$aAccess copy available to the general public$$fUnrestricted
000147798 5203_ $$aPurpose
Accurate alignment of Toric Intraocular Lens (T-IOLs) in cataract surgery is crucial for good visual outcomes. The purpose of this study was to evaluate the influence of rotation, axial shift and their combined effects on the refractive error and image quality of a wide range of T-IOL powers (from +1.50 D to +6.00 D cylinder) and two pupil diameters (3.34 and 4.44 mm).
Methods
Numerical ray tracing was utilized to quantify the residual error. Simulated retinal images and Visual Strehl (VS) ratios were calculated to evaluate image quality.
Results
First, T-IOL rotation showed better agreement with Holladay’s formula than 3.33% rule. Second, axial displacement resulted in acceptable residual cylinder (<0.50 D) across all examined cylinder powers. Third, concerning the combined effects, the influence of axial shift on residual cylinder becomes negligible when rotation errors exceed 2.5°. Fourth, a pupil-dependent nonlinear relationship was noted for image quality caused by both types of misalignment factors.
Conclusions
The 3.33% rule was confirmed as a reasonable approximation for the residual astigmatism caused by rotation of T-IOLs. The influence of axial shift on residual astigmatism becomes insignificant when there is also rotation. Image quality studies confirm that 30° of rotation are enough invalidate the compensation benefits of a T-IOLs in comparison with a Spherical Intraocular lens.
000147798 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FEDER/E44-23R$$9info:eu-repo/grantAgreement/ES/MICIU/PID2020-114311RA-I00
000147798 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000147798 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000147798 700__ $$0(orcid)0000-0002-3979-4528$$aRemón, Laura$$uUniversidad de Zaragoza
000147798 700__ $$0(orcid)0000-0002-1124-0363$$aAres, Jorge$$uUniversidad de Zaragoza
000147798 700__ $$aCastro-Alonso, Francisco J.$$uUniversidad de Zaragoza
000147798 7102_ $$11013$$2646$$aUniversidad de Zaragoza$$bDpto. Cirugía$$cÁrea Oftalmología
000147798 7102_ $$12002$$2647$$aUniversidad de Zaragoza$$bDpto. Física Aplicada$$cÁrea Óptica
000147798 773__ $$g19, 12 (2024), e0311566 [18 pp.]$$pPLoS One$$tPLoS ONE$$x1932-6203
000147798 8564_ $$s3642275$$uhttps://zaguan.unizar.es/record/147798/files/texto_completo.pdf$$yVersión publicada
000147798 8564_ $$s1940921$$uhttps://zaguan.unizar.es/record/147798/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000147798 909CO $$ooai:zaguan.unizar.es:147798$$particulos$$pdriver
000147798 951__ $$a2025-01-03-13:21:43
000147798 980__ $$aARTICLE