Have you ever heard of CVI? The answer, for most people, is no. Yet, cortical vision impairment is the most common cause of childhood vision impairment. Unfortunately, less than 20% of pediatric CVI cases are diagnosed, so many of us working to support children with AAC devices do not know to consider vision-related factors when we design and individualize systems. This session will present a primer on CVI, discuss recent research on CVI and AAC design considerations, and describe a case study in which CVI characteristics were used to design an AAC system for a child who had not been able to successfully use previous devices.