Neurogenic palsies

Question 1

what appearance of the eye os the third nerve commonly associated with

Answer 1

the imairment of the eye is commonly associated with a down and out appearance of the ispliateral eye , enlarged pupil and sluggish reactions

• this reflects the presence of some depression and full abbduction action of the globe , controlled by the superior oblique and lateral rectus which are innervated by the fourth cranial nerve and the sixth cranial nerve repsectivley

Question 2

what are the characteristics of a third nerve palsy

Answer 2

• an localised third nerve palsy - when complete ptosis is apparent and it involves the levator palpabrae superior

other factors include - complete paralysis of innervated extrocular muscles and pupil mydrisassi , third cranial nerve palsies are often incomplete