Ophthalmology General 1d4d0f48 The following ocular structure is not derived from surface ectoderm – A Crystalline lens B Sclera C Corneal epithelium D Epithelium of lacrimal glands High-Yield Explanation Sclera is derived from mesoderm. Crystalline lens, corneal epithelium and lacrimal gland are derived from surface ectoderm.