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Ophthalmological, cognitive, electrophysiological and MRI assessment of visual processing in preterm children without major neuromotor impairment

Record type: Article

Many studies report chronic deficits in visual processing in children born preterm. We investigated whether functional abnormalities in visual processing exist in children born preterm but without major neuromotor impairment (i.e. cerebral palsy). Twelve such children (< 33 weeks gestation or birthweight < 1000 g) without major neuromotor impairment and 12 born full-term controls were assessed at 8–12 years of age by means of ophthalmological assessment (visual acuity, colour vision, stereopsis, stereoacuity, visual fields, ocular motility, motor fusion), cognitive tests of visual-motor, visual-perceptual and visual-spatial skills and pattern-reversal visual evoked potentials (PR-VEPs). All participants also underwent magnetic resonance imaging (MRI) of the brain and neuromotor assessments. No significant differences were found between the groups on the ophthalmological, visual cognitive, neurological, neuromotor or MRI measures. The P100 component of the PR-VEP showed a significantly shorter latency in the preterm compared with the full-term participants. Whilst this P100 finding suggests that subtle abnormalities may exist at the neurophysiological level, we conclude that visual dysfunction is not systematically associated with preterm birth in the context of normal neurological status.

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Citation

O'Reilly, Michelle, Vargha-Khadem, Faraneh, Neville, Brian, Connelly, Alan, Wyatt, John, Timms, Chris and De Haan, Michelle (2010) Ophthalmological, cognitive, electrophysiological and MRI assessment of visual processing in preterm children without major neuromotor impairment Developmental Science, 13, (5), pp. 692-705. (doi:10.1111/j.1467-7687.2009.00925.x). (PMID:20712735).

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Published date: September 2010

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Local EPrints ID: 183813
URI: http://eprints.soton.ac.uk/id/eprint/183813
PURE UUID: a5ced8a5-0aae-4a85-99bb-2b0f5108f8e4

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Date deposited: 04 May 2011 09:04
Last modified: 18 Jul 2017 11:55

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Contributors

Author: Michelle O'Reilly
Author: Faraneh Vargha-Khadem
Author: Brian Neville
Author: Alan Connelly
Author: John Wyatt
Author: Chris Timms
Author: Michelle De Haan

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