What kind of exam would request if you saw pupil involvment in a third nerve palsy? Where would you suspect the lesion to be? You use 1% hydroxyamphetamine on a Px with horner's and see dilation in the affected eye. Px comes in what appears like horner's syndrome and Sxs of arm pain. Upon removing light from Px's eye you notice a lag in dilation. What are causes of anisocoria when the abnormal pupil is dilated?Ī Px presents with a bit of ptosis and miosis and anhidrosis on ipsilateral side. What are the causes of anisocoria when the abnormal pupil constricted? anamolous innervation of sphincter by neurons intended for ipsilateral MR co-innervation of the MR & iris sphincter What is the neurological reason for Tournay's phenomenon? Lateral gaze induces an enlarged pupil in abducting eye possible supersensitivity of one eye to cholinergic agents damage to ciliary ganglion or postganglionic parasympathetic fibres What is the pathology of Adie's tonic pupil unilateral blurred vision due to reduced accomodation
reacts minimally to light, and slowly to convergence and accommodation unilateral, irregular, slightly dilated pupil abnormal pupil may be larger or smaller oneĪfter doing a near convergence test you notice a Px has slow tonic redilation as Px shifts gaze from near to far. Argyll Robertson Pupil (also likely bilateral with interstitial keratitis through slit lamp) What condition would you suspect with a Px would comes in does not respond well to mydriatics, pupils small and irregular in shape and see a light near dissociation (poor reaction to light) What features do you expect to see in light-near dissociation? What signs would you expect to see in RAPD? affected eye responds as if light is dimmer consensual response is greater than direct both pupils dilate when abnormal eye is stimulated What features would you expect to see in RAPD? normal direct in opposite eye and normal consensual in involved eye no direct reflex and no consensual reflex in opposite eye What features would you suspect to see in Absolute Afferent Pupillary defect in one eye? Which parts of visual system are likely to be affected in an afferent defect? You shine light in a Px eyes and notice a defect. fibres arise from superior cervical ganglion Where do the dilator neuro-fibers arise from? Where do the sphincter neuro-fibres arise from? Is this afferent or efferent pupillary defect? Is this an afferent or efferent defect?Ī Px has anisocoria. integrity and function of: iris, optic nerve, and visual pathwaysĪ patient has abnormal reflex to light. Click here to study/print these flashcards.Ĭreate your own flash cards! Sign up here.
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