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Syntonics or optometric phototherapy, is the branch of ocular science dealing with the application of selected light frequencies through the eyes. It has been used clinically for over 70 years in the field of optometry with continued success in the
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Syntonics is a branch of optometry dealing in the relationship between various frequencies of light and neurophysiological responses. Syntonics is used in the treatement of vision problems by shining pencil thin beams of coloured lights onto the
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