Video 4.5 Evaluating saccades from Neuro-Ophthalmology and Neuro-Otology Textbook
Creator
Daniel R. Gold, DO; David S. Zee MD
Affiliation
(DRG) Departments of Neurology, Ophthalmology, Neurosurgery, Otolaryngology - Head & Neck Surgery, Emergency Medicine, and Medicine, The Johns Hopkins School of Medicine, Baltimore, Maryland; (DSZ) Departments of Neurology, Ophthalmology, Neuroscience, Otolaryngology - Head & Neck Surgery, The Johns Hopkins School of Medicine, Baltimore, Maryland
Subject
Saccades; Exam; Conjugacy; Abnormal Saccades
Description
𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: The examiner should note: conjugacy (a lag of the adducting eye may be seen with an INO); accuracy (posterior fossa lesions commonly produce dysmetria (overshooting or undershooting); velocity (if slow, may suggest a lesion of the burst neurons in the pons [PPRF - horizontally] or midbrain [riMLF - vertically]) Instructional ocular motor examination procedures. 𝗡𝗲𝘂𝗿𝗼-𝗼𝗽𝗵𝘁𝗵𝗮𝗹𝗺𝗼𝗹𝗼𝗴𝘆 𝗮𝗻𝗱 𝗡𝗲𝘂𝗿𝗼-𝗼𝘁𝗼𝗹𝗼𝗴𝘆 𝗧𝗲𝘅𝘁𝗯𝗼𝗼𝗸 𝗟𝗲𝗴𝗲𝗻𝗱: The examiner should note: conjugacy (a lag of the adducting eye may be seen with an internuclear ophthalmoplegia); accuracy (posterior fossa lesions commonly produce saccadic dysmetria [overshooting or undershooting]); velocity (if slow, may suggest a lesion of the burst neurons in the pons [paramedian pontine reticular formation, PPRF - horizontally] or midbrain [rostral interstitial medial longitudinal fasciculus, riMLF - vertically]). https://collections. lib.utah.edu/ark:/87278/s6md27q9
