[Brown syndrome: current status].
OBJECTIVE
Brown's syndrome is a form of anatomical strabismus, or retraction syndrome. It is defined by active and passive limitation of upward gaze in adduction in the field of action of the inferior oblique muscle. The etiology of Brown's syndrome remains unknown. The defect lies at the level of the superior oblique's tendonis trajectory via the trochlea. We studied the frequency of clinical signs and results after surgery in patients presenting congenital Brown's syndrome.


METHODS
Our study involved 18 children. They all underwent complete ophthalmological examination with orthoptic testing, pre and postoperatively.


RESULTS
Neither sidedness nor predominance of sex was noted. Compensatory head posture was noted in 7 of 18 cases. Limitation of upward gaze in adduction was a constant finding, with a positive duction test. Eleven cases underwent superior oblique recession. Results of surgery were satisfactory, with resolution of compensatory head posture in over 80% of cases.


CONCLUSIONS
The etiology of congenital Brown's syndrome remains unknown. The different surgical techniques give inconstant results. Operative indication is decided only when in the presence of well defined clinical manifestations: CHP, deviation in primary position with alteration of binocular vision.
Service d'Ophtalmologie du Pr D. Denis, Centre Hospitalo-Universitaire Nord, Marseille.
E
E
Hadjadj
J
J
Conrath
B
B
Ridings
D
D
Denis
D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D009801:Oculomotor Muscles / Q000503:physiopathology / Q000601:surgery; D013285:Strabismus / Q000151:congenital / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D013577:Syndrome; D016896:Treatment Outcome
Syndrome de Brown: actualités.