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Modelling adaptation effects in vergence and accommodation after exposure to a simulated Virtual Reality stimulus

Eadie, A.S., Gray, L.S., Carlin, P. and Mon-Williams, M. (2000) Modelling adaptation effects in vergence and accommodation after exposure to a simulated Virtual Reality stimulus. Ophthalmic and Physiological Optics, 20 (3). pp. 242-251. ISSN 0275-5408

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Abstract

Natural viewing conditions place equal demands on the vergence and accommodation systems. The two responses are co-ordinated via the interactive components which couple the two systems: accommodative vergence and vergence accommodation. The crosslink components are usually quantified by the AC/A and CA/C ratios. Whether these ratios are stable entities, genetically determined, or modifiable by experience has been the subject of some debate. A 'Virtual Reality' stimulus was used to place unequal demands on the vergence and accommodation systems. Pre-task and post-task measures of AC/A and CA/C were objectively determined. The changes in the post-task measures are discussed with reference to a dual interactive model of vergence and accommodation. Model simulations suggest that adaptation of the vergence and accommodative controllers (tonic adaptation) may also play a part by altering the open loop bias. The results therefore support the idea that vergence accommodation and accommodative vergence are capable of adaptation.

Item Type: Article
Academic Units: The University of Leeds > Faculty of Medicine and Health (Leeds) > Institute of Psychological Sciences (Leeds) > Cognitive Psychology (Leeds)
Depositing User: Repository Officer
Date Deposited: 26 Jun 2009 14:39
Last Modified: 29 Sep 2010 14:24
Published Version: http://dx.doi.org/10.1046/j.1475-1313.2000.00499.x
Status: Published
Publisher: Blackwell Publishing
Identification Number: 10.1046/j.1475-1313.2000.00499.x
URI: http://eprints.whiterose.ac.uk/id/eprint/8689

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