Influence of a multifocal intraocular lens centration and eye angles on light distortion and ocular scatter index.
Graefes Arch Clin Exp Ophthalmol
; 261(8): 2291-2299, 2023 Aug.
Article
in En
| MEDLINE
| ID: mdl-36884063
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.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Cataract
/
Lens Implantation, Intraocular
/
Multifocal Intraocular Lenses
Type of study:
Observational_studies
Limits:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Graefes Arch Clin Exp Ophthalmol
Year:
2023
Document type:
Article
Affiliation country:
Spain