lateral rectus muscle
The lateral rectus muscle is one of the 6 extraocular muscles that control eye movements. It is responsible for abduction and is the only muscle that is innervated by the abducens nerve (CN VI). It should normally measure 2.9 ± 0.6 mm.
- innervation: abducens nerve (CN VI)
- origin: annulus of Zinn (tendinous ring)
- insertion: globe (anterior, lateral surface)
- primary function: one of three ocular abductors
- secondary function: none
- tertiary function: none