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Hydroxypropyl methylcellulose (HPMC) is a cellulose\u2010based viscosity\u2010enhancing agent and is one of the most popular therapeutic ingredients in artificial tears. This review aims to evaluate the literature on the efficacy and safety of HPMC used in the treatment of DED. Literature searches were conducted in PubMed and Cochrane CENTRAL. A total of 28 clinical trials from 26 publications are included in this review, including 21 clinical intervention studies evaluating the effect of HPMC treatment over time and seven single instillation studies evaluating the short\u2010term physical and symptomatic effects of HPMC after drop\u2010instillation. The duration of clinical intervention studies ranged from 2\u2009weeks to 5.5\u2009months. DED severity ranged from mild to severe. Drop frequency ranged from two to up to 16 drops per day. HPMC concentration in artificial tears ranged from 0.2% to 0.5%. No major complications or adverse events were reported. Artificial tears containing HPMC were effective at improving symptoms and some signs of DED. However, combination drops with HPMC plus other therapeutic ingredients seem more effective than HPMC alone. HPMC appears to be equally effective or inferior to hyaluronic acid (HA). There is no evidence of superiority or inferiority to either carboxymethylcellulose (CMC) or polyethylene glycol 400\/propylene glycol (PEG\/PG). No single study explained the choice of drop frequency or HPMC concentration. More well\u2010designed studies are needed to determine an evidence\u2010based standard for HPMC treatment, including drop frequency, concentration and molecular weight for different DED severity and subgroups.<\/jats:p>","DOI":"10.1111\/aos.16753","type":"journal-article","created":{"date-parts":[[2024,9,2]],"date-time":"2024-09-02T04:23:31Z","timestamp":1725251011000},"page":"881-896","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Review of Hydroxypropyl Methylcellulose in Artificial Tears for the Treatment of Dry Eye Disease"],"prefix":"10.1111","volume":"102","author":[{"given":"O. 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