Describes three studies relating to visual functioning. Finds that reading retardation is the result of a clustering of factors, of multiple causation. Discusses the need to determine whether or not a student has the necessary lateral and other functional vision skills to maintain sufficient body energy for the demands of the reading task. (MG)

Discusses how the visual system operates as an avenue for learning through the intermeshing of its three systems: sensory, motor, and central processing. States that the evaluation of all three systems is vital to the diagnosis of and prescription for poor readers. (MG)