This is a sagittal section through the upper eyelid. The outer squamous epithelial covering of skin is at the right. Beneath this is connective tissue and the palpebral part of the orbicularis oculi muscle. Then there is a dense plate of connective tissue called the tarsus, beneath which to the left are the Meibomian glands which secrete onto the tearfilm. The eye is at the left. Eyelashes are seen at the lower right margin of the eyelid. [Image contributed by Nick Mamalis, MD, University of Utah]

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