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Year : 2020  |  Volume : 68  |  Issue : 5  |  Page : 924-926

Anomalous extraocular muscles in Crouzon syndrome with V-pattern exotropia

Department of Ophthalmology, Ajou University School of Medicine, Suwon, South Korea

Correspondence Address:
Dr. Seung Ah Chung
Ajou University Hospital, 164, World Cup-ro, Yeongtong-gu, Suwon - 16499
South Korea
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijo.IJO_1121_19

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Strabismus associated with Crouzon syndrome is common and often complex. V-pattern strabismus is most commonly reported in this condition and is mainly thought to be due to an excyclorotation of the orbits and rectus muscle pulleys. We report two cases of children with Crouzon syndrome and V-pattern exotropia who had rectus muscle heterotopy on orbital imaging and were also found intraoperatively to have anomalous extraocular muscles. At the time of surgery, bifid insertion, misdirection, and fibrosis of extraocular muscles were noted. This highlights the various causes of V-pattern strabismus associated with Crouzon syndrome, including dysmorphic orbits and extraocular muscle anomalies.

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