Fox, Robert S., OD
A Rationale for the Use of Prisms in the Vision Therapy Room

Vision therapy involves the use of lenses, prisms, filters and instrumentation to effect change in the neurological
pathways that direct our visual system. Prisms of moderate to high power can have powerful effects on this neurology and should be considered primary tools in the therapy room. Prisms and lenses have optical, perceptual, and visual properties that make them unique in the effects they are able to create. This makes them a valuable tool in the vision therapy room. This paper will explore the rationale behind prism-based therapy procedures and uses procedure examples to help the reader integrate prisms into their therapy routine.