Which of the following is a feature of Treacher Collins syndrome ?: (A) Hypoplasia of frontal bone, (B) Coloboma of eyelid, (C) Low arched palate, (D) All of the above
Answer is B. Coloboma of eyelid is one of the ocular feature of Treacher Collins syndrome Mandibulofacial dysostosis ( aka Treacher Collins syndrome) Refers to a condition resulting from hypoplasia of zygoma and mandible. Features of Treacher Collins syndrome : * Indistinct inferior orbital margin * Coloboma of the lower eyelid * Anti-mongoloid slant * Macrostomia with high-arched palate * External ear deformity * Bird-like face.