Hypochlorous acid hygiene solution in patients affected by blepharitis: a prospective randomised study

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BACKGROUND/AIMS: To investigate the clinical outcomes and antimicrobial activity of an hypochlorous acid hygiene solution compared with hyaluronic acid wipes for blepharitis treatment in patients with dry eye disease (DED). METHODS: This study involved 48 eyes of 48 patients affected by blepharitis with mild to moderate DED. 24 patients were treated with a hypochlorous acid hygiene solution (HOCL group) and 24 patients were treated with hyaluronic acid wipes (HYAL group) for a period of 4 weeks. The following clinical outcomes were assessed before (V0) and after the treatment period (V1): non-invasive keratograph break up time (NIK-BUT), tear film BUT (TF-BUT) tear meniscus height (TMH), Keratograph meibography, Meibomian Gland Yield Secretion Score (MGYSS), Corneal Staining Score (CSS), Schirmer test I, Keratograph conjunctival redness score and Ocular Surface Disease Index (OSDI). Moreover, microbiological analysis of upper and lower eyelid margins was performed at V0 both before and 5 min after treatment. RESULTS: After 1-month NIK-BUT and TF-BUT significantly increased in HOCL group, while they did not show a statistically significant difference in HYAL group compared with baseline. OSDI, TMH and MGYSS showed a significant difference in both groups, while Schirmer test, meibography, CSS and conjunctival redness score did not significantly change in both groups. Bacterial load showed a significant reduction in both groups, more pronounced in HOCL group compared with HYAL group. CONCLUSIONS: Hypochlorous acid hygiene solution can be securely employed in blepharitis treatment considering the satisfying clinical outcomes and antimicrobial activity compared with hyaluronic acid wipes.

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