.Anterior blepharitis, affecting the outside front of the eyelid where eyelashes are attached.
.Posterior blepharitis, where the meibomian glands within the eyelids, which produce oils to help lubricate the eye, dysfunction. Dry eye is a disease when the eye does not produce adequate tears needed to lubricate the eye. Inflammation of the surface of the eye may also occur along with dry eye. Other names of dry eye include dry eye syndrome, keratoconjunctivitis sicca (KCS), dysfunctional tear syndrome, lacrimal keratoconjunctivitis, evaporative tear deficiency, aqueous tear deficiency,