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Questions and Answers
Which muscle is responsible for miosis?
Which muscle is responsible for miosis?
- Ciliary
- Sphincter (correct)
- Pupillary
- Dilator (radial)
Which cranial nerve is responsible for carrying motor impulses from the CNS to the muscles of the iris?
Which cranial nerve is responsible for carrying motor impulses from the CNS to the muscles of the iris?
- Cranial nerve II
- Cranial nerve V
- Cranial nerve III (correct)
- Cranial nerve VII
What is the purpose of the swinging flashlight test?
What is the purpose of the swinging flashlight test?
- To diagnose cranial nerve III palsy
- To test for afferent pupillary defect (correct)
- To check for Horner's Syndrome
- To measure the pupil's response to light
What is the result of a lesion anterior to the chiasm?
What is the result of a lesion anterior to the chiasm?
What is the function of the Edinger-Westphal nucleus?
What is the function of the Edinger-Westphal nucleus?
What is the term for the phenomenon of rhythmic fluctuations in pupillary size due to an imbalance between sympathetic and parasympathetic innervation?
What is the term for the phenomenon of rhythmic fluctuations in pupillary size due to an imbalance between sympathetic and parasympathetic innervation?
What is the term for the measurement of the relative difference in pupillary constriction between the two eyes?
What is the term for the measurement of the relative difference in pupillary constriction between the two eyes?
What is the purpose of using neutral density filters in pupillary testing?
What is the purpose of using neutral density filters in pupillary testing?
What is the significance of the direct response being equal to the consensual response?
What is the significance of the direct response being equal to the consensual response?
What should you check if the pupil size difference is larger in dim or bright illumination?
What should you check if the pupil size difference is larger in dim or bright illumination?
What is the primary concern in a patient with isolated III CN palsy and pupil involvement?
What is the primary concern in a patient with isolated III CN palsy and pupil involvement?
What is the recommended course of action for a patient with pupil-sparing isolated III CN palsy and a history of diabetes or hypertension?
What is the recommended course of action for a patient with pupil-sparing isolated III CN palsy and a history of diabetes or hypertension?
At what age should a patient with pupillary sparing isolated III CN palsy be referred for neurotesting, regardless of underlying medical conditions?
At what age should a patient with pupillary sparing isolated III CN palsy be referred for neurotesting, regardless of underlying medical conditions?
What is the typical resolution time for most ischemic causes of isolated III CN palsy?
What is the typical resolution time for most ischemic causes of isolated III CN palsy?
What is the recommended follow-up time for a patient with isolated III CN palsy and a history of vascular disease?
What is the recommended follow-up time for a patient with isolated III CN palsy and a history of vascular disease?
What should be suspected in a patient with isolated III CN palsy and a history of giant cell arteritis?
What should be suspected in a patient with isolated III CN palsy and a history of giant cell arteritis?
In children under 10 years old, what is the recommended course of action for isolated III CN palsy, regardless of pupillary involvement?
In children under 10 years old, what is the recommended course of action for isolated III CN palsy, regardless of pupillary involvement?
What type of anisocoria is characterized by being equal in dim and bright illumination, without ptosis?
What type of anisocoria is characterized by being equal in dim and bright illumination, without ptosis?
What is the name of the condition in which the light reflex is absent or abnormal, but the near response is intact?
What is the name of the condition in which the light reflex is absent or abnormal, but the near response is intact?
Which of the following substances can cause mydriasis of up to 8 mm?
Which of the following substances can cause mydriasis of up to 8 mm?
What is the name of the condition characterized by unilateral or bilateral tonically reacting pupils developing in otherwise healthy patients?
What is the name of the condition characterized by unilateral or bilateral tonically reacting pupils developing in otherwise healthy patients?
What is the name of the substance used to treat hemorrhoids and also has a non-clinical use to decrease eye bags?
What is the name of the substance used to treat hemorrhoids and also has a non-clinical use to decrease eye bags?
What is the name of the condition caused by an afferent defect, essentially a 'blind eye'?
What is the name of the condition caused by an afferent defect, essentially a 'blind eye'?
What is the purpose of instilling dilute Pilocarpine 0.125% in the eyes?
What is the purpose of instilling dilute Pilocarpine 0.125% in the eyes?
What is the mechanism of action of apraclonidine in diagnosing Horner's Syndrome?
What is the mechanism of action of apraclonidine in diagnosing Horner's Syndrome?
What is the purpose of pharmacologic diagnostic testing in anisocoria?
What is the purpose of pharmacologic diagnostic testing in anisocoria?
What is the characteristic pupillary response in Horner's Syndrome?
What is the characteristic pupillary response in Horner's Syndrome?
What is the purpose of hydroxyamphetamine testing?
What is the purpose of hydroxyamphetamine testing?
What is the most common cause of isolated III CN palsy with pupil involvement?
What is the most common cause of isolated III CN palsy with pupil involvement?
What is the mechanism of action of cocaine in diagnosing Horner's Syndrome?
What is the mechanism of action of cocaine in diagnosing Horner's Syndrome?
What is the significance of a negative hydroxyamphetamine test result?
What is the significance of a negative hydroxyamphetamine test result?
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