6 extraocular eye muscles
medial rectus lateral rectus superior rectus inferior rectus superior oblique inferior oblique
innervation of EO eye muscles
superior oblique - trochlear nerve
lateral rectus - abducens nerve
the rest - oculomotor
actions: medial rectus
adduction
actions: lateral rectus
abduction
actions: superior rectus
elevate
adduct
intort
actions: inferior rectus
depress
adduct
extort
actions: superior oblique
intort
depress
abduct
actions: inferior oblique
extort
elevate
abduct
lesion: optic nerve
blindness in ispilateral eye
lesion: optic chiasm
bitemporal hemianopia
lesion: optic tract
contralateral homonymous hemianopia
lesion: optic radiation
contralateral homonymous hemianopia