Neurotrophic keratitis involves which nerve: September 2008
Ans. B: Trigeminal Neurotrophic keratopathy occurs in cases in which trigeminal nerve is paralyzed, typically as a result of radical treatment for trigeminal neuralgia. It does not occur in all cases of peripheral lesions of the trigeminal nerve; thus, if the gasserian ganaglion is removed or the trigeminal nerve with alcohol for trigeminal neuralgia with proper precautions, only a few cases develop neurotrophic keratitis. Neuroparalytic keratopathy is seen in facial nerve palsy as occurs in Bell's palsy, leprosy or neurological disorders leading to ectropion, lagophthalmos and exposure keratopathy.
Trochlear
Trigeminal
Abducens
Facial