Vision therapy, also known as visual training, vision training, or visual therapy, is a group of techniques attempting variously to correct or improve presume ocular, oculomotor, visual processing, and perceptual disorders." Vision therapy encompasses a wide variety of non-surgical methods which some have divided into two broad categories: 1) orthoptic vision therapy, also known as orthoptics, and 2) behavioral vision therapy, also known as behavioral or developmental optometry.