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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
The muscle which makes an angle of about 51deg with the optical axis is
assistant
The correct answer is  The extraocular muscles rotate the eyeball around veical, horizontal and antero-posterior axes. Medial and lateral rectus muscles are almost parallel to the optical axis of the eyeball; so they have got only the main action. While superior and inferior rectus muscles make an angle of 23deg and reflected tendons of the superior and inferior oblique muscles of 51degwith the optical axis in the primary position. Ref:- A K KHURANA; pg num:-315