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12 Cards in this Set

  • Front
  • Back
Fast searching or scanning VOLUNTARY eye movements are called _
SACCADES
Slower tracking INVOLUNTARY eye movement is called _
Smooth pursuit
Near triad includes
Convergence - mediated by MR muscles via CN III

Accomodation - contraction of ciliary muscle results in thickening of lens and increase in refractive power - mediated by Edinger- Westphal nucleus

Pupillary constriction - EW nucleus CN III
Horizontal gaze center is located in _
Paramedian pontined reticular formation (excitatory burst neurons, inhibitory burst neurons and nucleus prepositus hypoglossi)
Input to PPRF is from _
Superior colliculus and frontal eye field
Vertical gaze center is located in _
Rostral interstitial nucleus of MLF
Interstitial nucleus of Cajal
Patient is asked to look right - left eye normal, right eye didnt move - what is damaged
CN VI on the right
Patient is asked to look left - left eye normal, right eye looks down instead of left - what is damaged
CN III on the right
Patient is asked to look left and then down - left eye normal, right eye looks left but doesnt look down - what is damaged
CN IV on the right
The eyes of comatose patient are deviated to the right - what is damaged
Destructive lesion of R frontal eyefield
Patient is asked to look up but is unable to do so, also cannot converge - where is the lesion
Paralysis of vertical (upward gaze) amd convergence - PARINAUD SYNDROME
MLF syndrome or internuclear ophthalmoplegia is a condition where there is damage to _
MLF between abducent and oculomotor nuclei