A young man complains of double vision on seeing to the right. Which nerve is most likely to be
involved?
a. Left abducens
b. Right abducens
c. Left trochlear
d. Right trochlear
e. Right oculomotor
Ans. The key is B. Right abducens. [Diplopia on seeing to right indicates right lateral rectus
palsy which is supplied by right abducent nerve].