LAUSR

Patients with Crouzon syndrome commonly have a characteristic V‐pattern strabismus, accompanied by a prominent overaction of the inferior oblique muscles.[1‐6] The excyclorotation of the orbits and rectus muscle pulleys secondary to the fused coronal sutures may be mainly responsible for the V‐pattern strabismus in these patients.[2,5,6] Weiss et al. reported that the magnitude of V‐pattern exotropia simulated by pulley displacements using a computer program was highly correlated with those observed in patients with Crouzon syndrome.[5] In addition, Dagi et al. reported that the magnitude of excyclorotation of the orbits on imaging was clinically correlated with severity of V‐pattern in syndromic craniosynsotosis.[6] Thus, preoperative orbital imaging for extraocular muscles is crucial in surgical planning in these patients.