title: A new theory about heterophoria.
mesh_terms: D005403:Fixation, Ocular; D006801:Humans; D009801:Oculomotor Muscles / Q000503:physiopathology; D009988:Orthoptics; D012160:Retina / Q000503:physiopathology; D013285:Strabismus / Q000503:physiopathology; D014786:Vision Disorders / Q000209:etiology* / Q000503:physiopathology