A 45-year-old female presents with
a history of headache. She has had a thyroidectomy in the past.
On examination she has a partial
ptosis on the right, enophthalmos on the right side, the right pupil is
smaller than the left and the cilio-spinal reflex is absent on the right hand
side. Her vision is unimpaired, visual fields are normal and eye movements are
full with no diplopia.
The lesion described is:
Third nerve palsy