Question

what other signs are commonly seen apart from blepharoptosis,to define a third cranial nerve palsy?

Answer 1

Answer

Third cranial nerve disorders cause palsies and it also affect the pupil which result from

• Transtentorial brain herniation
• Very Less commonly, meningitis affecting the brain stem (eg, TB meningitis)
• Aneurysms (posterior communicating artery)

Common causes

• Ischemia of the 3rd cranial nerve usually due to hypertension and diabetes

in straight-ahead gaze The affected eye deviate slightly out and down; may not proceed in the midline due to adduction is slow Upward gaze is impaired. When downward gaze is attempted, the superior oblique muscle causes the eye to adduct slightly and rotate.