Dictionary of Ichthyology  

eye muscles = the muscles that move the eye up, down, backward and medially. These are the the inferior, medial, lateral, and superior recti, plus the superior and inferior oblique muscles.

Eye muscles and nerves in a shark, a = abducens, om = oculomotor, t = trochlearis (nerves); oi = inferior oblique, os = superior oblique, re = external rectus (lateral), ri = internal rectus (medial), rif = inferior rectus, rs = superior rectus (muscles), from Kingsley's "Textbook of Vertebrate Zoology, 1906. Photograph by Brian W. Coad.

Canadian Museum of Nature
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