EOMs Flashcards
Medial Rectus
Adduction
5.5mm from limbus
CN3
Lateral Rectus
Abduction
6.9mm from limbus
CN6
Superior Rectus
Elevation
Intortion, adduction
7.7mm from limbus
CN3
Inferior Rectus
Depression
Extorsion, adduction
6.5mm from limbus
CN3
Superior Oblique
Intortion
Depression, abduction
CN4
trochlea always nasal
Inferior Oblique
Extortion
Elevation, abduction
CN3
Tangential Point
Point where muscle first touches the globe
Arc of Contact
Between the tangential point and the insertion of the muscle in the sclera
Abducted 23 degrees, the SR….
elevates
Adducted 67 degrees, the SR….
intorts
Abducted 23 degrees, the IR….
depresses
Adducted 67 degrees, the IR….
extorts
Abducted 39 degrees, the SO….
intorts
Adducted 51 degrees, the SO….
depresses
Abducted 39 degrees, the IO….
extorter