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The paper presents two classifications of the dry eye syndrome: the Madrid and Russian classifications. The creation of its classification is required for the elaboration of treatment policy for this category of patients. The classifications are based on the scientific data on the epidemiology, etiology, and pathogenesis of the dry eye syndrome. Each classification identifies different forms of the dry eye. The classifications virtually published at the same time do not greatly differ from each other and they reflect the current approach to systematizing different forms of the dry eye. The paper analyzes the Madrid versus Russian classifications.