Human anatomy often delights us with unexpected structures. This is a heart shaped meibomian gland in the upper eyelid of a patient. The meibomian glands are holocrine type exocrine glands. Estimates vary but there are ~20 to 30 meibomian glands on the lower lid and ~40 to 50 on the upper lid.  At FishmanVision, we spend a good amount of our efforts at trying to keep these glands healthy using techniques like iLux, MiboFlow, and IPL.