Although perceptual retraining has for many years been an accepted part of occupational therapy for adults with perceptual problems stemming from brain injury, few outcome studies on this type of treatment have been conducted. To assure high-quality, cost-effective rehabilitation programs for this population, occupational therapists need to do more research to (a) precisely define perceptual interventions and (b) determine the efficacy of different occupational therapy approaches to perceptual problems. This article offers guidance on the design of future studies to achieve the latter goal by exploring the current research on the effectiveness of perceptual remediation and offers suggestions for future research.