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1Deborah Zelinsky and 2Stanley Tien
1Mind-Eye Institute, USA
2Sun-Time Optometry, Malaysia
The retina is comprised of brain tissue and is an overlooked part of the central nervous system. Each retina contains approximately 126 million light-sensing receptors through which electrical signals are filtered through ten retinal layers to allow only 1.2 million exiting signals. A majority of those signals transmit impulses through the retino-geniculate eyesight pathway forming a point to point representation in the visual cortex, but some signals travel directly from the retina to the limbic system (via the retino-hypothalamic pathway) and to the brainstem (via the superior colliculus and other nuclei, such as those triggering pupil responses). All of those pathways are affected by judicious use of eyeglass prescribing to selectively stimulate brain function.
Therapeutic eyeglass prescriptions (BrainwearTM) differ from traditional eyeglass prescriptions designed for conscious identification of letters on a non-moving chart. Mind-Eye testing takes subconscious navigation skills into account. It also involves assessment of unconscious eye reflexes which are entwined with other sensory systems that influence head and body posture used in spatial orientation. The effects are far-reaching in patients with neurological disorders. Classic 20/20 eye examinations were designed in 1862 to standardize eye care. At that time, technology did not include cars, computers, television, etc. Currently, subconscious peripheral eyesight is used daily to scan cluttered environments, yet 20/20 testing does not address it, nor its connection to other sensory systems. With the upcoming year 2020, increasing public awareness of why the future of neuroscience and neurology would benefit by “Leaving 20/20 in the 20th Century” is presented.
Stanley Tien is a Neuro-Developmental and Behavioural Optometrist who is Board Certified in Vision Development and Vision Therapy (FCOVD). His advanced training uniquely enables him to serve children and adults, especially those with complex visual disorders. Deborah Zelinsky is the founder and Research Director of the Mind-Eye Institute in Northbrook, IL USA. A multitude of professions follow her worldwide publications on how Neuro-Optometric Rehabilitation affects brain function. She is a board member of the Society of Brain Mapping and Therapeutics and a Community Leader in the Society for Neuroscience, writing a blog describing neuromodulation by therapeutic eyeglasses.