Main Entry: Trea·cher Col·lins syndrome Pronunciation: 'trE-ch&r-'käl-&nz- Function: noun :MANDIBULOFACIAL DYSOSTOSIS Collins, Edward Treacher(1862–1932), Britishophthalmologist. Collins was on the staff of the Royal London Ophthalmic Hospital and a visiting ophthalmic surgeon to several schools of ophthalmology. He published works on the anatomy and pathologyof the eye (1896), on the bacteriology and pathology of the eye (1911), and on the evolution of the eye (1922).