Facial Nerve TestDetect facial nerve lesionMeasure
severityLocalise site of lesionAssess prognosis for recoveryAssist
in decisionsDetect and avoid surgical injury*
PHYSICAL EXAMINATIONFacial assymetry*Eye brow dropLoss of
forehead *and nasolabial foldUncontrolled tearsInability to close
the eyes*Drooling of corner of mouthDeviation of angle of mouth to
opposite side*
HOUSE BRACKMANN GRADING
TOPODIAGNOSTIC TESTSLesion below the point at which particular
branch leave the facial nerve trunk will spare the function
subserved by that branch
Detect only most proximal lesions
Do not give information about precise level of lesions
FACIAL NERVE COURSE
LACHRYMAL FUNCTIONSchirmer testAbnormal if affected side show
less than 50% lachrymation compared to normal side orSum of the
length of wetted filter paper for both eyes is
