The dry eye syndrome is a very common ophthalmological disease, with a pathophysiology not completely understood. Therapeutic recommendations should be based on the etiology and the severity of the desease. To determin the disease severity level many parameters have been used, including level of ocular disconfort, visual symptomes, conjunctival injection and staining, corneal staining, lid pathology, BUT, and Schirmer score. Classical treatments (increasing lubrication of the ocular surface, improving conservation of existing natural tears, treating eyelid inflammation) are used together with more recent approaches (anti-inflammatory therapy, immunomodulators, biological tear substitutes).
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