In the past decade, considerable attention has been paid to examination of the impact of
amblyopia, and strabismus, upon the lives of the individuals. Although an extensive
amount of literature exists regarding amblyopia and its associated visual defects, little is
known about the contribution of the amblyopic eye in the habitual viewing condition
(i.e. both eyes viewing). The purpose of these studies was to determine whether
amblyopes are disadvantaged in the performance of tasks under habitual viewing
conditions, highlighting any functional differences which may exist as a consequence of
amblyopia. Secondly, the work aimed to investigate whether the amblyopic eye
contributes to the habitual performance of these tasks.
A simple light detection task, in a dichoptic arrangement based upon blue/yellow
stimuli viewed through yellow filters, was used to investigate the above two aims and
investigate the degree of interocular suppression in amblyopic participants. Using a 3D
motion analysis system performance was assessed for an obstacle crossing task
(adaptive gait) and a task of reaching for and grasping of an isolated object and in a
¿cluttered¿ environment. Fine motor skills were assessed in a threading a needle task.
On the whole it was found that amblyopes are not disadvantaged under habitual viewing
conditions, and in cases where differences were found to exist this appeared to be in
tasks requiring speed and accuracy. Consistently across all studies it was found that the
amblyopic eye contributed in a positive manner, thus, as in visual normals, two eyes are
better than one.
Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/5415 |
Date | January 2010 |
Creators | Panesar, Gurvinder K. |
Contributors | Barrett, Brendan T., Pacey, Ian E., Buckley, John |
Publisher | University of Bradford, School of Optometry and Vision Science |
Source Sets | Bradford Scholars |
Language | English |
Detected Language | English |
Type | Thesis, doctoral, PhD |
Rights | <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-nc-nd/3.0/88x31.png" /></a><br />The University of Bradford theses are licenced under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/">Creative Commons Licence</a>. |
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