Evaluation of Ocular Movements in Patients with Dyslexia

Autor/inn/en	Vagge, Aldo; Cavanna, Margherita; Traverso, Carlo Enrico; Iester, Michele
Titel	Evaluation of Ocular Movements in Patients with Dyslexia
Quelle	In: Annals of Dyslexia, 65 (2015) 1, S.24-32 (9 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0736-9387
DOI	10.1007/s11881-015-0098-7
Schlagwörter	Dyslexia; Patients; Visual Impairments; Eye Movements; Children; Visual Measures; Visual Discrimination; Ophthalmology; Speed Reading; Reading Comprehension; Cohort Analysis; Performance Based Assessment; Lateral Dominance; Time on Task; Reading Diagnosis; Learning Disabilities; Reading Difficulties + Suchen Sie Ihr Suchwort? Dyslexics; Legasthenie; Lese-Rechtschreib-Schwäche; Patient; Visual handicap; Sehbehinderung; Augenbewegung; Child; Kind; Kinder; Augenheilkunde; Schnelllesen; Leseverstehen; Kohortenanalyse; Leistungsermittlung; Hemisphärendominanz; Zeitaufwand; Learning handicap; Lernbehinderung; Reading difficulty; Leseschwierigkeit
Abstract	The aims of this study were to analyze the relationship between dyslexia and eye movements and to assess whether this method can be added to the workup of dyslexic patients. The sample was comprised of 11 children with a diagnosis of dyslexia and 11 normal between 8 and 13 years of age. All subjects underwent orthoptic evaluation, ophthalmological examinations, and eye movement analysis, specifically, stability analysis on fixating a still target, tracking saccades, analysis of fixation pauses, speed reading, saccades, and regressions through the reading of a text. Stability analysis on fixating a still target showed a significant (p?<?0.001) difference between the two groups showing an increased amount of loss of fixation among dyslexic subjects (5.36?±?2.5 s and 0.82?±?2.1, respectively). Tracking saccades (left and right horizontal axis) did not show a significant difference. When reading parameters were looked into (number of saccades, number of regressions, reading time through the reading of a text), a significant (p?<?0.001) difference was found between the groups. This study supports the belief that the alteration of eye movement does not depend on oculo-motor dysfunction but is secondary to a defect in the visual processing of linguistic material. Inclusion of assessment of this defect might prove beneficial in determining the presence of dyslexia in young children at a younger age, and an earlier intervention could be initiated. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01