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  1. Table 1
  2. Table 2
Discussion
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Introduction

The learning disability dyslexia is presently considered a language processing abnormality typified by phonologic skill disorders (1,2). A visual origin for dyslexia is not favorably championed (3,4,5). Visual origins for dyslexia are even less tenable when recent brain imaging studies demonstrate functional brain regions of decreased activity in dyslexics (6). There is either an overwhelming research interest in a phonologic origin or no tangible source lead for an ocular motor causation for dyslexia. It is now proposed that dyslexia is a disorder of stereopsis and functionally correctable. This report's intention is to merely give support and credence to a stereopsis origin for dyslexia and create new interest in an alternative origin for the learning disorder as dyslexia.

First, a dyslexic stereoscopic origin is based upon the combination of a stereoscopic eye exercise and the coupled necessity to use a new reading focal point for retinal epipolar line alignment, correspondence. Epipolar lines are right and left eye retinal regions that decrease retinal correspondence search for normal stereopsis (7,8,9,10). The second is through use of a vergence reading arc evaluation as retinal epipolar line matching areas.

On downward gaze cyclovergence produces inward rotation, nasally directed, and on upward gaze cyclovergence rotation is outward, laterally directed (8). Since dyslexics are effectively treated with a stereoscopic eye exercise and reading method (11), advantage of this change, from inward rotation to outward rotation on vergence change from downward gaze to upward gaze, presents a mechanism for further demonstrating that dyslexics need only to attain correct epipolar alignment for correction.

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