Keratoconjunctivitis Sicca (Dry Eyes; Keratitis Sicca) By Melvin I Roat, MD, FACS, Sidney Kimmel Medical College at Thomas Jefferson University Reviewed / Revised Aug 2022 | Modified Sep 2022 View Patient Education Etiology Symptoms and Signs Diagnosis Treatment Key Points Topic Resources Punctum Plug Keratoconjunctivitis sicca is chronic, bilateral desiccation of the conjunctiva and cornea due to an inadequate tear film.