Blepharitis is caused by stagnant meibomian glands and bacteria on the surface of the eyelids and lashes. The bacteria can cause chronic infection or inflammation of the meibomian glands. Symptoms of blepharitis include crusting of the eyelashes when waking, flaking of the skin around the eyes, itchy eyelids, red or swollen eyes, a gritty sensation, and/or tearing