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Vision Therapy for Dyslexia

DYSLEXIA: (dyslexic). Margaret S. Livingstone, Ph.D., Professor of Neurobiology, Dpt. of Neurobiology, Harvard Medical School defined dyslexia as follows: “Developmental dyslexia is the selective impairment of reading skills despite normal intelligence, sensory acuity, and instruction. It is important to note that Dr. Margaret Livingstone defines dyslexia as “impairment of reading skills DESPITE NORMAL…SENSORY ACUITY.”

Normal vision and normal hearing are essential parts of normal sensory acuity, so it is critical to rule out any problems with vision or hearing when considering the diagnosis and/or treatment of dyslexia. Notably, normal vision is NOT defined as 20/20 acuity alone. A 20/20 eye test only tests how the person sees at the distance of 20 feet. A person can pass a 20/20 test and still have serious vision problems. Likewise, the standard hearing test only looks for hearing loss, but does not test for other auditory processing abnormalities.

Dr. Livingstone’s research on developmental dyslexia also showed that “Visual abnormalities were reported to be found in more than 75% of the reading-disabled children tested.” This statement was made about reading-disabled children, not dyslexic children, so, to repeat, it is critical that testing for “dyslexia” be multi-disciplinary and include thorough testing of the child’s sensory function and integration. See an article on Vision, Learning and Dyslexia by the American Optometric Association.