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Systane® lubricant eye drops in the management of ocular dryness

Authors Benelli U

Published 10 June 2011 Volume 2011:5 Pages 783—790


Review by Single-blind

Peer reviewer comments 3

Umberto Benelli
Department of Neurosciences, Section of Ophthalmology, University of Pisa, Pisa, Italy

Abstract: The understanding of dry eye disease has advanced recently through increasing recognition that the etiology of the condition involves both tear evaporation and insufficient tear production, and that tear film instability and inflammation play roles in the various stages of the disease. Of significance, it has been recognized that lipid layer thickness correlates with tear film stability. The management of dry eye involves various strategies and therapeutic approaches that address one or more etiopathological components of the disease. The purpose of this review is to outline the characteristics and clinical utility of the Systane® ocular lubricants that contain hydroxypropyl-guar and one or both of the demulcents, ie, polyethylene glycol 400 and propylene glycol. Clinically, these products are safe and are indicated for the temporary relief of burning and irritation due to dryness of the eye. In particular, this review describes the formulations, mechanisms of action, and clinical utility of the newest additions to this topical ocular lubricant family, Systane Ultra® and Systane Balance®. Both of these ocular products are formulated with an intelligent delivery system and both provide symptomatic relief to patients with dry eye. However, Systane Balance is a novel formulation that contains both polymer and lipid components designed to protect the ocular surface and replenish tear film lipids simultaneously, a factor that is of particular relevance to patients who have dry eye associated with meibomian gland dysfunction.

Keywords: Systane Ultra, Systane Balance, dry eye, hydroxypropyl-guar, meibomian gland dysfunction, dimyristoylphosphatidylglycerol

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