Ophthalmology All of the following ocular structures are derived from the surface ectoderm except: A Crystalline lens B Substantia propria of the cornea C Conjunctival and corneal epithelium D Lacrimal glands 💡 Explanation All of the following ocular structures are derived from the surface ectoderm except: ✓ Correct Answer: B. Substantia propria of the cornea