Eccentric correction for off-axis vision in central visual field loss
(2003) In Optometry and Vision Science 80(7). p.535-541- Abstract
- Background. Subjects with absolute central visual field loss use. eccentric fixation and magnifying devices to utilize their residual vision. This preliminary study investigated the importance of an accurate eccentric correction of off-axis refractive errors to optimize the residual visual function for these subjects. Methods. Photorefraction using the PowerRefractor instrument was used to evaluate the ametropia in eccentric fixation angles. Methods were adapted for measuring visual acuity outside the macula using filtered optotypes from high-pass resolution perimetry. Optical corrections were implemented, and the visual function of subjects with central visual field loss was measured with and without eccentric correction. Results. Of the... (More)
- Background. Subjects with absolute central visual field loss use. eccentric fixation and magnifying devices to utilize their residual vision. This preliminary study investigated the importance of an accurate eccentric correction of off-axis refractive errors to optimize the residual visual function for these subjects. Methods. Photorefraction using the PowerRefractor instrument was used to evaluate the ametropia in eccentric fixation angles. Methods were adapted for measuring visual acuity outside the macula using filtered optotypes from high-pass resolution perimetry. Optical corrections were implemented, and the visual function of subjects with central visual field loss was measured with and without eccentric correction. Results. Of the seven cases reported, five experienced an improvement in visual function in their preferred retinal locus with eccentric refraction. Conclusions. The main result was that optical correction for better image quality on the peripheral retina is important for the vision of subjects with central visual field loss, objectively as well as subjectively. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/305885
- author
- Gustafsson, Jörgen LU and Unsbo, Peter
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- central field loss, loss, central visual field, central scotoma, oblique astigmatism, preferred retinal locus, aberrations, eccentric fixation, eccentric correction, certec
- in
- Optometry and Vision Science
- volume
- 80
- issue
- 7
- pages
- 535 - 541
- publisher
- Lippincott Williams & Wilkins
- external identifiers
-
- wos:000184210000010
- pmid:12858089
- scopus:0038164746
- ISSN
- 1538-9235
- language
- English
- LU publication?
- yes
- id
- 61f862ed-a997-4c2b-bb11-eac47cc27e9c (old id 305885)
- alternative location
- http://www.certec.lth.se/doc/eccentriccorrection_2003/
- http://www.optvissci.com/pt/re/ovs/abstract.00006324-200307000-00015.htm;jsessionid=GbvBMqhsTc2FWP1F1kqQzS1rQ3JyBRTp0QLwlvWkKcJpDW1BMymw!-933386751!181195628!8091!-1
- date added to LUP
- 2016-04-01 12:04:06
- date last changed
- 2022-03-05 18:27:44
@article{61f862ed-a997-4c2b-bb11-eac47cc27e9c,
abstract = {{Background. Subjects with absolute central visual field loss use. eccentric fixation and magnifying devices to utilize their residual vision. This preliminary study investigated the importance of an accurate eccentric correction of off-axis refractive errors to optimize the residual visual function for these subjects. Methods. Photorefraction using the PowerRefractor instrument was used to evaluate the ametropia in eccentric fixation angles. Methods were adapted for measuring visual acuity outside the macula using filtered optotypes from high-pass resolution perimetry. Optical corrections were implemented, and the visual function of subjects with central visual field loss was measured with and without eccentric correction. Results. Of the seven cases reported, five experienced an improvement in visual function in their preferred retinal locus with eccentric refraction. Conclusions. The main result was that optical correction for better image quality on the peripheral retina is important for the vision of subjects with central visual field loss, objectively as well as subjectively.}},
author = {{Gustafsson, Jörgen and Unsbo, Peter}},
issn = {{1538-9235}},
keywords = {{central field loss; loss; central visual field; central scotoma; oblique astigmatism; preferred retinal locus; aberrations; eccentric fixation; eccentric correction; certec}},
language = {{eng}},
number = {{7}},
pages = {{535--541}},
publisher = {{Lippincott Williams & Wilkins}},
series = {{Optometry and Vision Science}},
title = {{Eccentric correction for off-axis vision in central visual field loss}},
url = {{https://lup.lub.lu.se/search/files/2767549/3602288.pdf}},
volume = {{80}},
year = {{2003}},
}