Research Article  |   July 2013
Effects of Visual Rehabilitation on a Child With Severe Visual Impairment
Author Affiliations
  • Li-Ting Tsai, MS, is Occupational Therapist, Taipei Parents’ Association for the Visually Impaired, and PhD Student, School of Occupational Therapy, College of Medicine, National Taiwan University, Taipei
  • Ling-Fu Meng, OTR, PhD, is Associate Professor, Department of Occupational Therapy, Institute of Clinical Behavioral Science, Chang Gung University, Tao-Yuan, Taiwan
  • Wei-Chi Wu, MD, PhD, is Head of Retina Section, Department of Ophthalmology, Chang Gung Memorial Hospital, and Associate Professor, School of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan
  • Yuh Jang, OTR, PhD, is Assistant Professor, School of Occupational Therapy, College of Medicine, National Taiwan University, Taipei
  • Yu-Chin Su, MD, is Attending Doctor, Department of Neurology, Taipei Branch, Buddhist Tzu Chi General Hospital, No. 289, Jianguo Road, Sindian City, Taipei County 231, Taiwan; hermessu828@gmail.com
Article Information
Pediatric Evaluation and Intervention / Vision / Children and Youth
Research Article   |   July 2013
Effects of Visual Rehabilitation on a Child With Severe Visual Impairment
American Journal of Occupational Therapy, July/August 2013, Vol. 67, 437-447. doi:10.5014/ajot.2013.007054
American Journal of Occupational Therapy, July/August 2013, Vol. 67, 437-447. doi:10.5014/ajot.2013.007054
Abstract

We examined the effects of visual rehabilitation, including a chromatic luminance discrimination program and a fixation training program, on a 6-yr-old boy with severe visual impairment. Single-subject ABA and AB designs were used. The programs were conducted 2×/wk and included 6 to 7 sessions for the baseline phase and 10 to 11 sessions for the intervention phase. Play was integrated into the visual training programs. Goggle visual evoked potential (VEP) testing was used to evaluate neural activity in the primary visual cortex. Correct responses increased and response times were shortened after training in luminance discrimination. The total and maximum fixation time also improved, as did P100 latency and amplitude of VEPs. While walking, the boy was able to detect obstacles he had not noticed before training. The results indicate the value of visual training and the possibility of brain plasticity in a child with severe visual impairment.