Cranial nerve examination

what does the palpebral/blink reflex test and what CN does this relate too

tap the upper, lower, medial, and lateral parts of the eye lid and check for the animals ability to blink

CN:

afferent 5 (ophthalmic and maxillary)

Efferent 7

what does the corneal reflex test and what CN does this relate too

touch a soft object to cornea to watch for globe retraction/blink

CN:

afferent 5(ophthalmic)

Efferent 6,7

what does Ocular motility/dolls eye maneuver test and what CN does this relate too

move head horizontally and vertically and watch for eyes following direction of head

CN

3,4,6 ,8

what does the pupillary light reflex test and what CN does this relate too

place a bright light in the eye to see if both pupils will constrict

CN

afferent 2

efferent 3

what reflex is tested by the swinging light test and what CN does this relate too

while testing for PLR swing light rapidly to opposite eye to assure other pupil remains constricted

CN

afferent 2

efferent 3

what does the dazzle reflex test and what CN does this relate too

suddenly illuminate eye and watch if patient squints or globe retracts

CN

afferent 2

efferent 3

what does the menace response test and what CN does this involve

threaten the dog to see if it will close its eye(learned response)

CN

afferent 2

efferent 7

what does the cotton ball, maze test, and visual placing test evaluate

cotton ball- tracking

maze test- navigation

visual placing- depth perception