DYSLEXIA DIAGNOSIS AND TREATMENT
The National Institute of Neurological Disorders and Stroke (May 12, 2010) described dyslexia as a neurological disease that affects learning.
Understanding the causes and treatment for other neurological diseases impacting vision led us to a similar treatment for dyslexia by improving reading speed and comprehension over a very short period of time. Therapy can be as simple as wearing the prescribed eyeglasses and reading on a daily basis. Our ongoing research with a large sample of patients has demonstrated that ophthalmic prisms can change VEP amplitudes and latencies and improve visual acuity and function over and above conventional spectacle prescriptions. This method also has applications for anyone with mild to severe alexia caused by cortical damage or optic nerve disease.
Our treatment of dyslexia is a new discovery that has resulted from our five-year study of neuro-stimulation for patients suffering from neurological loss of vision. The breakthrough occurred when we noted a link between stroke and dyslexia. In screening, both groups of patients are unable to touch the end of a penlight with one finger when asked. No matter how many times the task if presented practice does not improve errors in touching the penlight. This clinical sign is referred to as past-pointing. We have found that screening for past-pointing is an excellent tool for identifying children and adults with dyslexia. VEP (Visual Evoked Potential) electrodiagnostic testing of these individuals almost always shows further evidence of latencies (lateness) in receiving visual information.
Objects, pictures, symbols, everything we see travels as light through the lens of the eye where it is focused on the retina, and thereby converted into analog electrical signals. These signals travel through the brain and arrive at the primary visual cortex in about 100 milliseconds. Although our dyslexia patients have normal vision, they have positive neurological signs and abnormal signals traveling through their brain, which slows the arrival of the signals from the eye. In a person with dyslexia, signals often take 115 to 140 milliseconds to arrive at the primary visual cortex. This represents a significant delay of fifteen to forty percent, which causes the processing difficulties that people with dyslexia experience. The delays in processing are detected and measured with Visually Evoked Potential (VEP) testing. Our outcomes suggest that when responses to signals are delayed, Wernicke’s area cannot process the information needed to convert the signals into words and sentences, and therefore reading effectively is very difficult and sometimes impossible.
Ophthalmic prism has been used for decades to reposition retinal images by moving the angle of light entering the eye. We have made a major discovery in finding another important and even more applicable use of ophthalmic prism, and that is to speed up the individual’s receiving of visual information. Speed of seeing is crucial to many visual demands in everyday life, particularly in the ability to read.
The specially designed and individualized prescriptions for prism glasses, based on results from the VEP, as well as the entire comprehensive eye exam, substantially correct the patient’s/student’s latency problems. Immediate evidence from trial lenses shows absence of past-pointing and improved speed of reading. The level of advancement of the student will depend on his overall learning potential, as well as attention, motivation, auditory processing, etc.
Our research and that of our colleagues in neurology shows that there is a six-week period of adaptation and growth after the patient/student begins wearing the glasses. Visual learning skill development requires that the student wear the glasses at all waking times, and not repeatedly take them on and off. The brain cannot adapt well to inconsistency of visual-directional stimuli.
If the student has difficulty accepting the glasses, therapists will need to create a desensitization module, with acceptance as the first objective in the individual Educational Plan.
Out consultant services include a licensed cognitive-behavioral therapist with a background working with special needs children and adults. Please do not hesitate to contact us for help with classroom activities to enhance visual and behavioral function.
Dear Dr. Siwoff,
Since I have had such an amazing experience with our children after seeing you, …, I have felt the need to share our amazing success with others. I have been calling around to schools … spreading the word of my success story. I have slowly been getting many phone calls from desperate parents which have heard about your practice and learned that I too have been helped.
There are unfortunately too many children and teenagers suffering with similar reading issues struggling to keep up to par in school. Many parents have told me the stories of their teenagers ready to give up in … schools because they are already burnt and it is too difficult with them.
I feel that since I was granted this amazing gift for my children they have gone from hating to read to loving it- from struggling academically to being considered top of the class I would like to help others too.