exam 2 - vestibular testings Flashcards
smooth pursuits and saccades are indication of peri of central
central issues
VOR cancellation the pt cannot keep their eye on the target
central issue
why do we do gaze holding
to see if you have central lesion
the cere and the brain stem are essential for gaze holding
what two components are important for gaze holding
medial vestibular nucleus
prepositus hypoglossi
what happen if our eye drift from the central position
there will be quick corrective saccades that will beat in the opposite direction of the slow drift
this is gaze evoked nys
what is a skewed deviation
vertical misalignment of the eyes due to a supranuclear lesion
how is the skewed deviation named
for the side of the lower eye
what is the vetical movement of the eye an indication of in the cover test
brain lesion or a stroke
what is strabismus
an abnormal alignment of the eyes
heterophoria
this is the intermittent tendency for misalignment
may develope heaache, double vision, eye strain
what is heteriphoria due to
stress
head ache
illness
hterotrophia is seen in what population of children
3%
children do not grow out of it
what is a tropia - seen in the test
this occurs when the fixating eye is covered and the deviating uncovered eye moves
what is a phoria - seen in the test
when the deviating eye is covered - it tends to move
so when we uncover it the examiner can see the eye move back to its original position
what do we see with a positive in HIT
corrective saccade
- indicating that they have a vest issue
testing what ear in HIT
turn to the left - testing the left ear
if only positive on one side for the HIT what does this indicate
a UVL
for vibration induced nys where is the vibration applied
the mastoid
with UVL what kind of nys did people have with vibration induced
horizontal
fats phase beating toward affected ear
long term use of ppresent vestibular medication can
impact the indivdual recovery
post operative phase and interventions for vest issues
may postpone
how long can the risk of fall last for for someon who has a UVL
one year
what is rentinal slip r
movement of visual images across the retina
what is the impact of rentinal slip
error signal that the brain attempts to minimize by icreasing he gain of the VOR
when do we refer neuro-optometrist
extreme exotropia
pt is not getting better
convergence spasm
trophia - eye placement
the eyes are alway deviated
phoria - eye placment
the eyes are sometimes deviated
