Relationship between vision and motor impairment in children with spastic cerebral palsy: new evidence from electrophysiology

Relationship between vision and motor impairment in children with spastic cerebral palsy: new evidence from electrophysiology

Author Costa, M. F. da Google Scholar
Salomão, Solange Rios Autor UNIFESP Google Scholar
Berezovsky, Adriana Autor UNIFESP Google Scholar
Haro, F. M. de Google Scholar
Ventura, D. F. Google Scholar
Institution Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Abstract The aim of the present study was to measure visual acuity (VA) by the sweep visual evoked potential method (sVEP) and relate it to the degree of motor impairment in children with spastic cerebral palsy (SCP). Monocular VA was estimated in 37 SCP children aged from 6 to 48 months, classified as tetraplegic (n = 14), diplegic (n = 13), and hemiplegic (n = 10), without ophthalmological complaints with ages ranging from 6 to 48 months. Motor impairment was rated according to the Gross Motor Function Classification System (GMFCS), in five levels of severity. VA was below age norms in 13/14 (92%) tetraplegics, 10/13 (77%) diplegics and 4/10 (40%) hemiplegics. in addition, a two-way ANOVA within each subgroup showed significant differences in VA between the five GMFCS levels, with high positive correlation between VA loss and the GMFCS rating. Differences between the three types of SCP impairment in each level of GMFCS were not statistically significant, possibly due to the small number of patients. in conclusion, the use of an electrophysiological method (sweep-VEP) for the measurement of visual acuity in these patients allows a more precise and reliable estimate than behavioral measurements, since their motor impairment might interfere with the behaviorally assessed visual acuity. in addition, the finding of a high correlation between quantified motor impairment and VA loss in SCP patients is a new observation that might help to understand the causes of VA loss in these patients. (C) 2003 Elsevier B.V. All rights reserved.
Keywords cerebral palsy
GMFCS
young children
sweep-VEP
visual acuity loss
Language English
Date 2004-03-02
Published in Behavioural Brain Research. Amsterdam: Elsevier B.V., v. 149, n. 2, p. 145-150, 2004.
ISSN 0166-4328 (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 145-150
Origin http://dx.doi.org/10.1016/S0166-4328(03)00223-7
Access rights Closed access
Type Article
Web of Science ID WOS:000189079700004
URI http://repositorio.unifesp.br/handle/11600/27670

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