Optical aberrations of intraocular lenses measured in vivo and in vitro

Autor: Susana Marcos, Ignacio Jiménez-Alfaro, Sergio Barbero
Rok vydání: 2003
Předmět:
Optics and Photonics
Pseudophakia
genetic structures
medicine.medical_treatment
Blood gas monitoring [[OCIS] Medical optics and biotechnology]
Intraocular lens
In Vitro Techniques
Image quality assessment [[OCIS] Imaging systems]
Aberrations (global) [[OCIS] Geometric optics]
law.invention
[OCIS] Geometric optics: Lens system design
Optics
[OCIS] Imaging systems: Image quality assessment
[OCIS] Medical optics and biotechnology: Blood gas monitoring
law
In vivo
[OCIS] Medical optics and biotechnology: Optical diagnostics for medicine
Refractive surgery
medicine
Humans
Computer Simulation
Postoperative Period
Intraocular lenses (IOLs)
[OCIS] Geometric optics: Aberrations (global)
Aged
Lenses
Intraocular
[OCIS] Vision
color
and visual optics: Vision
color
and visual optics
medicine.diagnostic_test
business.industry
Corneal Topography
Lens system design [[OCIS] Geometric optics]
Cataract surgery
Middle Aged
Models
Theoretical
Corneal topography
Atomic and Molecular Physics
and Optics
eye diseases
Electronic
Optical and Magnetic Materials
Lens (optics)
Aberrations of the eye
Spherical aberration
Aberrations
Vision
color
and visual optics [[OCIS] Vision
color
and visual optics]
Computer Vision and Pattern Recognition
sense organs
business
Optical diagnostics for medicine [[OCIS] Medical optics and biotechnology]
Zdroj: Digital.CSIC. Repositorio Institucional del CSIC
instname
Scopus-Elsevier
Popis: 11 pages, 12 figures.-- OCIS codes: 330.0330, 170.1460, 110.3000, 080.1010, 080.3620, 170.4580.-- PMID: 14570097 [PubMed].
Corneal and ocular aberrations were measured in a group of eyes before and after cataract surgery with spherical intraocular lens (IOL) implantation by use of well-tested techniques developed in our laboratory. By subtraction of corneal from total aberration maps, we also estimated the optical quality of the intraocular lens in vivo. We found that aberrations in pseudophakic eyes are not significantly different from aberrations in eyes before cataract surgery or from previously reported aberrations in healthy eyes of the same age. However, aberrations in pseudophakic eyes are significantly higher than in young eyes. We found a slight increase of corneal aberrations after surgery. The aberrations of the IOL and the lack of balance of the corneal spherical aberrations by the spherical aberrations of the intraocular lens also degraded the optical quality in pseudophakic eyes. We also measured the aberrations of the IOL in vitro, using an eye cell model, and simulated the aberrations of the IOL on the basis of the IOL’s physical parameters. We found a good agreement among in vivo, in vitro, and simulated measures of spherical aberration: Unlike the spherical aberration of the young crystalline lens, which tends to be negative, the spherical aberration of the IOL is positive and increases with lens power. Computer simulations and in vitro measurements show that tilts and decentrations might be contributors to the increased third-order aberrations in vivo in comparison with in vitro measurements.
This research was funded by grants CAM 08.7/0010/2000 (Comunidad Autónoma de Madrid, Spain) and BFM2002-02638 (Ministerio de Ciencia y Tecnología, Spain) to Susana Marcos. The Consejo Superior de Investigaciones Científicas, Carl Zeiss, Spain, and Ministerio de Educacion y Cultura and Residencia de Estudiantes funded fellowships to Sergio Barbero.
Databáze: OpenAIRE
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