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Influence of a multifocal intraocular lens centration and eye angles on light distortion and ocular scatter index.
- Source :
-
Graefe's Archive of Clinical & Experimental Ophthalmology . Aug2023, Vol. 261 Issue 8, p2291-2299. 9p. - Publication Year :
- 2023
-
Abstract
- Purpose : To assess how eye axes and multifocal intraocular lens (MIOL) centration may impact the light distortion index (LDI) and ocular scatter index (OSI). Methods: Fifty-eight subjects implanted with the trifocal MIOL Q-Flex M 640PM or Liberty 677MY (Medicontur) were included in this retrospective analysis. The following variables were collected with the Pentacam Wave (Oculus) considering the vertex normal as the coordinates center: chord-mu to the center of the pupil, chord-alpha to the geometrical center of the cornea, and chord-MIOL to the center of the diffractive ring. These measurements were correlated with OSI (HD Analyzer, Visiometrics) and LDI (light distortion analyzer, CEORLab). Results: Chord-MIOL centroid was 0.12 mm at 62°, chord-mu was 0.09 mm at 174°, and chord-alpha was 0.38 mm at 188°. A relationship was found between OSI and LDI, rho = 0.58, p < 0.0005). No relationships were found between chord-mu or chord-alpha and the LDI or OSI, neither for the total magnitude, nor the decomposition in orthogonal components (p > 0.05). The LDI was significantly correlated with the temporal centration of the MIOL versus the vertex normal (rho = 0.32, p = 0.02). Conclusions: As opposed to what has been previously described, the temporal centration of the MIOL was related to a decrease in the LDI. Future studies with extreme values of the included variables are required to establish cut-offs for considering these variables as exclusion criteria in the implantation of a MIOL. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0721832X
- Volume :
- 261
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Graefe's Archive of Clinical & Experimental Ophthalmology
- Publication Type :
- Academic Journal
- Accession number :
- 166736581
- Full Text :
- https://doi.org/10.1007/s00417-023-06028-x