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Eccentric correction for off-axis vision in central visual field loss

Gustafsson, Jörgen LU and Unsbo, Peter (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)
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author
organization
publishing date
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
2007-09-03 13:19:13
date last changed
2018-01-07 05:44:39
@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},
  keyword      = {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},
  volume       = {80},
  year         = {2003},
}