Tears are important to the overall health of the eyes and vision. Each time you blink, a protective coating of tears is spread like a film over the front of the eye. If you do not blink often enough or have incomplete blinks (incomplete blinking meaning your eye lids do not touch every time you blink), dry spots can develop on the surface of the eye and can cause vision to blur and decrease even transiently.
Meibomian Gland Disease (MGD):
MGD can be caused by a bacterial infection and inflammation which results in a decrease in the lipid (oil) layer of the tear film. When the tear film is unstable evaporation occurs between blinks, which results in further inflammation and discomfort. Studies report that MGD accounts for approximately 84 – 88 % of Dry Eyes. MGD also causes dry eye symptoms and eyelid inflammation.