ABSTRACT
There are six extraocular muscles in each eye: the four recti – medial, lateral, superior and inferior – and the two obliques – superior and inferior. These muscles originate from the bony orbit and insert into the globe which they move. Some consider levator palpebrae superioris to be an extraocular muscle but its function, elevation of the upper lid, is quite different to that of the muscles described below and it will not be discussed here.
