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Young children with low vision experience delays in cognitive development, motor development, and social skills because of the lack of motivation or insufficient opportunities to explore their environments actively. As a result, they have difficulty acquiring practical knowledge and spatial and environmental concepts. This review of the literature explores these problems, discusses current approaches to addressing them, and suggests areas for future research, including the use of optical aids.

This article describes the physiological mechanisms involved in three-dimensional depth perception and presents a variety of distance and depth cues and strategies for detecting and estimating curbs and steps.

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