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    Comprehensive Ophthalmology, Cornea/External Disease, Neuro-Ophthalmology/Orbit

    The meibomian gland is a sebaceous gland that secretes the oily component of tears. There are approximately 30 to 40 vertically oriented meibomian glands across a normal lid. The meibomian glands are in the posterior aspect of the lid, behind the orbital septum and just in front of the cartilage tarsal plate, which provides support for the lids.