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Relieving the symptoms of dry eye disease: update on lubricating eye drops containing hydroxypropyl-guar

, , , &
Pages 826-834 | Published online: 17 Jun 2021
 

ABSTRACT

Hydroxypropyl-guar (HPG) is a thickening agent first added to lubricating eye drops in 2003. This agent, which enhances viscosity, has been used in the SYSTANE® family of lubricant eye drops (Alcon Laboratories, Inc., Fort Worth, TX, USA). HPG forms a partially linked gel with borate to prolong the retention of demulcents, such as polyethylene glycol and propylene glycol, on the eye. This helps to protect the ocular surface, thereby reducing the symptoms of dry eye disease (DED). The definition of DED has evolved with advances in research, leading to changes in HPG-containing eye care solutions. This article reviews current knowledge on the use of HPG-containing lubricating eye drops in the management of DED.

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Acknowledgements

All authors are employees of Alcon Research, LLC.

Disclosure of potential conflicts of interest

No potential conflict of interest was reported by the author(s).

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