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Psychophysical measures of visual acuity in autism spectrum conditions

journal contribution
posted on 2023-07-26, 13:15 authored by Teresa Tavassoli, Keziah Latham, Michael Bach, Steven C. Dakin, Simon Baron-Cohen
Previously reported superior visual acuity (VA) in autism spectrum conditions (ASC) may have resulted from methodological settings used (Ashwin, Ashwin, Rhydderch, Howells, & Baron-Cohen, 2009). The current study re-tested whether participants with (N = 20) and without (N = 20) ASC differ on psychophysical measures of VA. Participants’ vision was corrected before acuity measurement, minimising refractive blur. VA was assessed with an ETDRS chart as well as the Freiburg Visual Acuity and Contrast Test (FrACT). FrACT testing was undertaken at 4 m (avoiding limitations of pixel-size), using 36 trials (avoiding fatigue). Best corrected VA was significantly better than the initial habitual acuity in both groups, but adults with and without ASC did not differ on ETDRS or FrACT binocular VA. Future research should examine at which level of visual processing sensory differences emerge.

History

Refereed

  • Yes

Volume

51

Issue number

15

Page range

1778-1780

Publication title

Vision Research

ISSN

1878-5646

Publisher

Elsevier

Language

  • other

Legacy posted date

2013-07-11

Legacy Faculty/School/Department

ARCHIVED Faculty of Science & Technology (until September 2018)

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