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The effects of increased visual task demand on foveation in congenital nystagmus

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journal contribution
posted on 2024-06-05, 06:51 authored by LA Tkalcevic, Larry AbelLarry Abel
Commonly, when an individual with congenital nystagmus (CN) performs a visually demanding task their nystagmus intensifies and their visual acuity decreases, probably due to poorer foveation. However, the relationship between fixation attempt and nystagmus waveform has never been quantified. In this study 14 CN subjects viewed a Landolt C of varying orientation and size. They indicated its orientation via a button array whilst eye movements were recorded. Foveation was uncorrelated with optotype size. These results suggest that CN is not exacerbated by visual demand per se rather the need to do something visually demanding of importance to the individual. © 2004 Elsevier Ltd. All rights reserved.

History

Journal

Vision Research

Volume

45

Pagination

1139-1146

Location

Amsterdam, The Netherlands

Open access

  • Yes

ISSN

0042-6989

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Issue

9

Publisher

Elsevier

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