Use of Fresnel Prism Glasses to Treat Stroke Patients With Hemispatial Neglect  Sheila Keane, MS, Caoilfionn Turner, MS, Catherine Sherrington, PhD, John R. Beard, PhD  Archives of Physical Medicine and Rehabilitation  Volume 87, Issue 12, Pages 1668-1672 (December 2006) DOI: 10.1016/j.apmr.2006.08.322 Copyright © 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig 1 While wearing prism glasses, the patient begins the prism adaptation training procedure with his hand on his chest, then reaches under the screen to touch the target object as shown. In this study, the prism adaptation training procedure consisted of 30 reaches toward randomly presented targets in the right, left, and central visual fields. Archives of Physical Medicine and Rehabilitation 2006 87, 1668-1672DOI: (10.1016/j.apmr.2006.08.322) Copyright © 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig 2 In this subject (case 2), standard Timed Up & Go test walking times were compared on 3 occasions with the added conditions of either talking while walking or avoiding an obstacle. When asked to name fruits or vegetables while walking, his time slowed by about 7 seconds on all test occasions. However, when avoiding an obstacle, the 11-second slowing observed before the prism adaptation training session was corrected to only 1 second in subsequent testing. Improvement persisted for 6 days. Abbreviation: PA, prism adaptation. Archives of Physical Medicine and Rehabilitation 2006 87, 1668-1672DOI: (10.1016/j.apmr.2006.08.322) Copyright © 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions