A single blinded randomised controlled pilot trial of prism adaptation for improving self-care in stroke patients with neglect

• Published in: Neuropsychological rehabilitation 2010-04, Vol.20 (2), p.180-196
• Main Authors: Turton, Ailie J., O'Leary, Kelly, Gabb, Judith, Woodward, Rebecca, Gilchrist, Iain D.
• Format: Article
• Language: English
• Subjects: Activities of daily living; Adaptation; Adaptation, Psychological; Aged; Biological and medical sciences; Feasibility Studies; Female; Fingers; Hemispatial neglect; Humans; Male; Medical sciences; Motor Activity; Neurology; Neuropsychological Tests; Patient Compliance; Perceptual Disorders - etiology; Perceptual Disorders - rehabilitation; Pilot Projects; Pointing; Prism adaptation; Psychology. Psychoanalysis. Psychiatry; Psychomotor Performance; Psychopathology. Psychiatry; Reeducation. Readaptation. Sociotherapy; Rehabilitation; Self Care; Selfcare; Severity of Illness Index; Single-Blind Method; Spatial neglect; Stroke; Stroke - complications; Stroke Rehabilitation; Strokes; Time Factors; Treatment Outcome; Treatments; Vascular diseases and vascular malformations of the nervous system; Visual Perception
• ISSN: 0960-2011; 1464-0694
• DOI: 10.1080/09602010903040683

Prism adaptation has been shown to alleviate the symptoms of unilateral spatial neglect following stroke in single case and small group studies. The purposes of this single blinded pilot randomised controlled trial were to determine the feasibility of delivering prism adaptation treatment in a clinically valid sample and to assess its impact on self-care. Thirty seven right hemisphere stroke patients with unilateral spatial neglect were randomised into either prism adaptation (using 10 dioptre, 6 degree prisms) or sham treatment (using plain glasses) groups. Treatment was delivered each weekday for two weeks. Pointing accuracy, without vision of the finger, was recorded each day before treatment. Outcome was measured, by blinded assessors, four days and eight weeks after the end of treatment using the Catherine Bergego Scale (CBS) and the conventional neuropsychological tests from the Behavioural Inattention Test (BIT). Thirty four patients received treatment: 16 with prisms, 18 sham. Mean compliance was 99% and 97%, respectively. Over the treatment days only the prism treated group showed increased leftward bias in open loop pointing to targets on a touch screen. However, despite the group level changes in pointing behaviour no overall effect of the treatment on self-care or BIT were found.