“…LG denervation has been widely used since the 1940s as a "cure" for epiphora and tearing caused by environmental factors. Current evidence indicates that neural damage to the exocrine glands, including the LG, in humans and other species is associated with autonomic dysfunction, local inflammation, and secretory impairment and plays a part in the DES mechanism, such as in Sjögren's syndrome (8,(21)(22)(23) .…”