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Effects of tucking procedure in superior oblique palsy.:Part 2. Effects of tucking of the paretic muscle on the angular velocity in dynamic counter-rolling Zen Ikuta 1 1Dept. of Ophthalmol, Okayama Univ Med Sch pp.629-632
Published Date 1986/6/15
DOI https://doi.org/10.11477/mf.1410209747

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  • Abstract
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Sixteen cases with unilateral superior oblique palsy were treated by tucking procedure of the paretic mus-cle. The series included 6 congenital cases and 10 trau-matic ones. In order to evaluate the effect of tucking on dynamic counter-rolling (DCR), the angular velocity of the eye was measured with the head tilted to either side before and after surgery.

The angular velocity of the paretic eye was less than that of the fellow eye when the head was tilted to the paretic side. There was no difference in the angular velocity between both eyes when the head was tilted to the sound side (p<0.01).

After tucking procedure, The angular velocity of the sound eye became less than the presurgical value when the head was tilted to the paretic side. The tucking procedure failed to influence the velocity of either eye when the head was tilted to the sound side. The angular velocity was further analyzed by divid-ing the DCR into three phases according to the degree of head tilt. The maximum velocity of both eyes occurred in the same phase prior to surgery. The velocity of excycloduction of the sound eye was reduced after surgery. It appeared that the impaired incycloduction of the paretic eye induced compensatory excessive excy-cloduction of the sound eye. Conversely, recovery of incycloductive force of the paretic eye after surgery would reduce excycloduction of the sound eye.

Rinsho Ganka (Jpn J Clin Ophthalmol) 40(6) : 629-632, 1986


Copyright © 1986, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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