<prompt> The following ocular structure is not derived from surface ectodermCrystalline lensScleraCorneal epitheliumEpithelium of lacrimal glands  <response>: The ocular structure derived from surface ectoderm are The crystalline lens The epithelium of the cornea The epithelium of the conjunctiva Lacrimal gland The epithelium of the eyelids its derivatives, .viz cilia, tarsal gland conjunctival glands The epithelium lining the lacrimal apparatus The sclera is derived from the associated paraxial mesenchyme. Reference: 