Meibomian glands are tiny glands located along the eyelid margin. Meibomian glands are responsible for producing the lipid (oily) layer of our tear film. When these glands get blocked or capped, meibomian gland dysfunction occurs. When the oily layer is not present in the correct proportions, the aqueous (watery) layer of our tears evaporates quickly.  When the aqueous layer evaporates the signs and symptoms of Dry Eye Syndrome are noted.  These signs and symptoms can include burning, itching, tearing, redness, stinging, grittiness and even excess tearing.