Trochlear CN IV and Abducens CN VI
Trochlear CN IV
✨ M ➡ Superior oblique, which depresses the adducted eye.
Injury classically leads to being unable to look down and inwards causing difficulty reading or descending stairs.
Abducens CN VI
✨ M ➡ Lateral rectus, which abducts the eye.
Injury classically causes an inability to look laterally, with the eye resting