Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/207175
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Perceptual impact of astigmatism induction in presbyopes |
Autor: | Benedi, Clara CSIC ORCID CVN; Velasco Ocaña, Miriam CSIC; Dorronsoro, Carlos CSIC ORCID; Pascual, Daniel CSIC ORCID; Hernández, M.; Marín, Gildas; Marcos, Susana CSIC ORCID | Palabras clave: | Astigmatism Adaptation Best focus Refraction Aberration Presbyopia Presbyopia correction |
Fecha de publicación: | 18-nov-2019 | Editor: | Elsevier | Citación: | Vision Research 165: 143-151 (2019) | Resumen: | We investigated the effect of induced astigmatism on subjective best focus and on visual acuity in 28 subjects of different ages (pre-presbyopic and presbyopic) and with different refractive profiles (emmetropes and astigmats). Measurements were performed using a custom-developed Adaptive Optics system, which allowed correction of high order aberrations and induction of astigmatism (0.5, 1, 1.5 and 2.0 D; axis: 180°, 45° and 22.5°). Upon induction of astigmatism, best focus shifted towards negative values in pre-presbyopic emmetropic eyes (by −0.14 D for 0.5 D and by −0.33 D for 2.0 D), while it shifted towards positive values in presbyopes, both in emmetropic presbyopes (by +0.04 D for 0.50 D and by +0.16 D for 2.0 D) and in astigmatic presbyopes (by +0.23 D for 0.50 D and by +0.40 D for 2.0 D). Also, visual acuity was most sensitive to astigmatism induction in pre-presbyopic emmetropes and least sensitive in presbyopes, particularly when high order aberrations were corrected: visual acuity ratio with/without astigmatism was: 0.74/0.85/0.98 (for astigmatism induced at 180°) and 0.68/0.73/0.86 at 45°, for pre-presbyopic emmetropes/presbyopic emmetropes/presbyopic astigmats. These findings may be connected to long term exposure to astigmatism in astigmats and corrected presbyopes. | Descripción: | 9 pags., 8 figs., 2 tabs. | Versión del editor: | http://dx.doi.org/10.1016/j.visres.2019.10.008 | URI: | http://hdl.handle.net/10261/207175 | DOI: | 10.1016/j.visres.2019.10.008 | Identificadores: | doi: 10.1016/j.visres.2019.10.008 issn: 1878-5646 |
Aparece en las colecciones: | (CFMAC-IO) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Perceptual impact.pdf | 516,24 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
4
checked on 13-abr-2024
WEB OF SCIENCETM
Citations
4
checked on 20-feb-2024
Page view(s)
173
checked on 22-abr-2024
Download(s)
114
checked on 22-abr-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.