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  | Convergence Insufficiency       Convergence Insufficiency  
 
    
 
     
 
 
 
    
   Introduction  
 There are six muscles attached to each eye that control movement of the eyes in all directions. When these   extra-ocular muscles   are working in perfect harmony, it is comfortable and easy to perform visual tasks at any distance and at any direction of gaze. (Right: a diagram of the six muscles.) 
   Convergence   may be thought of as the ability to cross the eyes; as funny as this may sound, w...Read More |  |   |  
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