Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0030552 (paresis)
 5,831 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In free space a random-dot-stereogramme for the determination of the extent of cyclofusion is used with the help of a haploscope. In the normal person orthophoria with regard to rolling to within +/- 1 degrees is found not only in the primary position but also in the secondary and tertiary positions and with head tilt. From the fact that with circular rotation of both eye images against each other pseudostereoscopic effects occur, it is deduced that the cyclofusion seen here occurred sensorially. The testing of the area of cyclofusion gives a very good basis for determining the indication for operation on the superior oblique muscle. It is shown with examples that simply tucking this muscle when old trochlear nerve paresis is present without provable excyclotropia is not favorable. Instead one must tuck the muscle asymmetrically in such cases--the fold should be markedly smaller at the anterior border of the muscle which acts more as a rotator, than at the posterior border.
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PMID:[Cyclofusion measurements for assessing the function of the oblique eye muscles (author's transl)]. 69 42

Fifteen patients with bilateral trochlear paresis underwent oblique muscle surgery. In 12 cases, a superior oblique tuck and inferior oblique recession were performed uni- or bilaterally. In 3 cases, a superior oblique muscle tuck was sufficient. Excyclotropia and vertical deviations in adduction, primary position and abduction were alleviated by surgery in most cases. The upper and lower limits of the field of single binocular vision were on average 15 degrees in the upward-gaze and 25 degrees in the downward-gaze. The presence of postoperative Brown syndrome was rarely disturbing to the patient. Postoperatively, the effects of surgery decreased only slightly over time. We found that in cases of bilateral superior oblique palsy, a tuck in one or both superior oblique muscles sufficed only when the excyclotropia in the primary position did not exceed 15 degrees, when the vertical deviation in adduction did not exceed 3 degrees and when the V-pattern was minimal. We found that uni- or bilateral surgery on both superior and inferior oblique muscles could successfully alleviate excyclotropia of more than 20 degrees with a vertical deviation in the primary position of more than 5 degrees.
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PMID:[Combined oblique muscle surgery in bilateral trochlear paralysis]. 262 5