title: Epidemiology and classification of dry eye.
authors.affiliation: University Ophthalmic Consultants of Washington, Department of Ophthalmology, Georgetown University Medical Center, DC, USA.
authors.forename: M A
authors.initials: MA
authors.lastname: Lemp
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D003937:Diagnosis, Differential; D015352:Dry Eye Syndromes / Q000145:classification* / Q000175:diagnosis / Q000453:epidemiology*; D005260:Female; D006801:Humans; D015994:Incidence; D007638:Keratoconjunctivitis Sicca / Q000145:classification* / Q000175:diagnosis / Q000453:epidemiology*; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D015995:Prevalence; D012859:Sjogren's Syndrome / Q000175:diagnosis; D011795:Surveys and Questionnaires