Loss of vision is believed to have a great impact on the acquisition of spatial knowledge. The aims of the present study are to examine the performance of individuals with visual impairments on spatial tasks and the impact of residual vision on processing these tasks. In all, 28 individuals with visual impairments--blindness or low vision--participated in this study. The results reveal that participants with visual impairments were competent to perform spatial tasks, and their performance is related to the existence of residual vision. (Contains 3 tables and 3 figures.)