IOVS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Chandna, A.
Right arrow Articles by Norcia, A. M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Chandna, A.
Right arrow Articles by Norcia, A. M.
(Investigative Ophthalmology and Visual Science. 2001;42:875-878.)
© 2001 by The Association for Research in Vision and Ophthalmology, Inc.

Contour Integration Deficits in Anisometropic Amblyopia

Arvind Chandna1, Philippa M. Pennefather1, Ilona Kovács2 and Anthony M. Norcia3

1 From the Visual Assessment Unit, Department of Paediatric Ophthalmology, Alder Hey Children’s Hospital, Liverpool, United Kingdom; the 2 Laboratory of Vision Research, Rutgers University, Piscataway, New Jersey; and the 3 Smith–Kettlewell Eye Research Institute, San Francisco, California.

PURPOSE. Previous retrospective studies have found that integration of orientation information along contours defined by Gabor patches is abnormal in strabismic, but not in anisometropic, amblyopia. This study was conducted to reexamine the question of whether anisometropic amblyopes have contour integration deficits prospectively in an untreated sample, to isolate the effects of the disease from the effects of prior treatment—factors that may have confounded the results in previous retrospective studies.

METHODS. Contour detection thresholds, optotype acuity, and stereoacuity were measured in a group of 19 newly diagnosed anisometropic amblyopes before initiation of occlusion therapy. Contour detection thresholds were measured using a card-based procedure.

RESULTS. Significant interocular differences in contour detection thresholds were present in 14 of the 19 patients with anisometropic amblyopia.

CONCLUSIONS. Contour integration deficits are a common, but not universal, finding in untreated anisometropic amblyopia. Differences in the prevalence of contour integration deficits between the present study and that of another study may lie in differences in treatment history and/or in the sensitivity of the two different contour integration tasks.




This article has been cited by other articles:


Home page
 Schizophr BullHome page
M. F. Green, P. D. Butler, Y. Chen, M. A. Geyer, S. Silverstein, J. K. Wynn, J. H. Yoon, and V. Zemon
Perception Measurement in Clinical Trials of Schizophrenia: Promising Paradigms From CNTRICS
Schizophr Bull, January 1, 2009; 35(1): 163 - 181.
[Abstract] [Full Text] [PDF]

Home page
 J. Physiol.Home page
I. P. Conner, J. V. Odom, T. L. Schwartz, and J. D. Mendola
Retinotopic maps and foveal suppression in the visual cortex of amblyopic adults
J. Physiol., August 15, 2007; 583(1): 159 - 173.
[Abstract] [Full Text] [PDF]

Home page
 IOVSHome page
A. Chandna, J. A. Gonzalez-Martin, and A. M. Norcia
Recovery of Contour Integration in Relation to LogMAR Visual Acuity during Treatment of Amblyopia in Children
Invest. Ophthalmol. Vis. Sci., November 1, 2004; 45(11): 4016 - 4022.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2001 by the Association for Research in Vision and Ophthalmology