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Eye movements can be functionally classified into suprauclear and infranuclear, conjugate and disjunctive, or pursuit and saccade. From the neuroophthal mological point of view, routine examination methods of eye movements consisted of the following: (1) confrontation observation, (2) electromyogram of the extrinsic eye muscles, (3) electro-oculog-ram (EOG), (4) photoelectric oculogram (PEOG), (5) image analysis system using infra-red television fundus camera (IRTV).<BR>After description of individual methods, several clinical cases of abnormal eye movements were presented, in which the etiology could be definitely diagnosed by administering each examination. For example, the etiology of Duane's retraction syndrome was speculated on the basis of the electromyogram to be supranuclear paradoxical innervation between the oculomotor and abducens nucleus. When comparative studies of three eye movement recording systems between EOG, PEOG and IRTV were made, it was shown that the IRTV is the most accurate method for demonstrating the small displacement of eye position, and PEOG is more sensitive than EOG, and PEOG is the most useful method for analysing the maximum saccadic velocity and eye position.<BR>Finally, the author mentioned electrophysiological characteristics and muscle representation of the oculomotor nucleus of the cat which were produced antidromically by electrical stimulation of the oculo-motor nerve branches in the orbit.
- 一般社団法人 日本めまい平衡医学会の論文
一般社団法人 日本めまい平衡医学会 | 論文
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