The pathogenesis of KCS may be related to a single process or a combination of conditions that affect the lacrimal glands. Some of the major causes of KCS are: chronic blepharoconjuctivitis, congenital hypoplasia of the main lacrimal gland, use of sulfonamides and topical atropine, loss of parasympathetic innervations of the lacrimal gland,metabolic diseases, immune mediate diseases,distemper and iatrogenic disease. One of the most common etiology and pathogenesis of the iatrogenic KCS is the excision of the prolapsed third eyelid lacrimal gland. The diagnosis of KCS is based on clinical signs and Schirmer’s Tear Test (STT1) values less than 10 mm/min (SANSOM et al., 1995; MOORE, 1998).