lateral rectus (LR)

Introduction

One of the extraocular muscles.

Origin

• lateral part of the common tendinous ring that bridges the superior orbital fissure

Insertion

lateral part of sclera of eye

Action

abduction of globe of eye

Innervation

abducens nerve (CN VI)

Physical examination

Test: ask patient to look outward

More general terms

• extraocular muscle (EOM)