Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/111298
COMPARTIR / EXPORTAR:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Invitar a revisión por pares abierta
Título

Aberrometry in patients implanted with accommodative intraocular lenses

AutorPérez Merino, Pablo CSIC ORCID; Birkenfeld, J. CSIC; Dorronsoro, Carlos CSIC ORCID; Ortiz, Sergio CSIC; Durán, Sonia; Jiménez-Alfaro, Ignacio CSIC; Marcos, Susana CSIC ORCID
Fecha de publicación2014
EditorElsevier
CitaciónAmerican Journal of Ophthalmology 157: 1077- 1089.e1 (2014)
ResumenPurpose To evaluate the objective accommodative response, change of aberrations, and depth of focus in eyes implanted with the Crystalens accommodative intraocular lens (IOL) at different accommodative demands. Design Prospective, observational study. Methods Eleven cataract patients (22 eyes) who underwent implantation of a Crystalens accommodative IOL, and control groups of 9 normal subjects (17 eyes) and 17 pseudophakic patients (17 eyes) implanted with monofocal IOLs were evaluated. A custom-developed laser ray tracing aberrometer was used to measure the optical aberrations. The monochromatic wave aberrations were described using a sixth-order Zernike polynomial expansion. Measurements were obtained under dilated and natural viewing conditions (for accommodative efforts ranging from 0 to 2.5 diopters [D]). The accommodative response was obtained by analyzing changes in paraxial defocus (associated to changes in defocus) and by evaluating the differences in the effective defocus (associated with defocus, spherical aberrations, and pupil diameter) with the accommodative demand. Depth of focus was estimated from through-focus objective optical quality. Results Wave aberration measurements were highly reproducible. Vertical trefoil (Z3 -3) was the predominant higher-order aberration in the Crystalens group and significantly higher (P <.0001) than in the young group, but similar to the monofocal IOL group. The coma root mean square also was higher (P <.005) in the Crystalens group than in the young group. On average, the defocus term (Z2 0), astigmatism, or higher-order aberrations did not change systematically with accommodative demand in Crystalens eyes. As found for paraxial defocus, the effective defocus in Crystalens eyes did not show significant differences between conditions: 0.34 ± 0.48 D (far), 0.32 ± 0.50 D (intermediate), and 0.34 ± 0.44 D (near). Depth of focus was statistically significantly higher in the Crystalens eyes than in the control groups. Conclusions The accommodative response of eyes implanted with the Crystalens accommodative IOLs, measured objectively using laser ray tracing aberrometry, was lower than 0.4 D in all eyes. Several subjects showed changes in astigmatism, spherical aberration, trefoil, and coma with accommodation, which must arise from geometrical and alignment changes in the lens with accommodative demand. Pseudoaccommodation from increased depth of focus may contribute to near vision functionality in Crystalens-implanted patients. © 2014 by elsevier inc. all rights reserved.
URIhttp://hdl.handle.net/10261/111298
DOI10.1016/j.ajo.2014.02.013
Identificadoresdoi: 10.1016/j.ajo.2014.02.013
issn: 1879-1891
Aparece en las colecciones: (CFMAC-IO) Artículos




Ficheros en este ítem:
Fichero Descripción Tamaño Formato
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo

CORE Recommender

SCOPUSTM   
Citations

23
checked on 16-mar-2024

WEB OF SCIENCETM
Citations

18
checked on 29-feb-2024

Page view(s)

313
checked on 19-mar-2024

Download(s)

137
checked on 19-mar-2024

Google ScholarTM

Check

Altmetric

Altmetric


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.