A Preservative-Free Combination of Sodium Hyaluronate and Trehalose Improves Dry Eye Signs and Symptoms and Increases Patient Satisfaction in Real-Life Settings: The TEARS Study

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INTRODUCTION: Dry eye disease (DED) is a frequently observed condition characterized by ocular discomfort and visual disturbance. It is highly prevalent and impairs patients' quality of life (QoL). This study assessed the benefit of a preservative-free bioprotectant eye drop formulation containing sodium hyaluronate and trehalose (SH-trehalose) with regards to DED, as well as patient satisfaction, through a large-scale real-life survey. METHODS: In a multi-center, international, prospective observational study, subjects with DED received SH-trehalose for 84 days. Ocular Surface Disease Index (OSDI), Dry Eye Questionnaire-5 items (DEQ-5), and patient satisfaction were assessed at baseline, day 28, and day 84, and clinical evaluations included ocular surface staining, Schirmer test, tear film break-up time (TBUT), and conjunctival hyperemia at baseline and day 84. RESULTS: A total of 312 patients were evaluated, of whom 82.4% were women. The mean age was 57.9 ± 15.2 years. The mean OSDI score at baseline was 41.7 ± 20.6. After 84 days, the mean OSDI score was 27.3 ± 19.8 (p < 0.001). The percentage of patients with a severe OSDI score decreased from 60.3 to 34.5%. The DEQ-5 score significantly (p < 0.001) improved after 28 and 84 days, as did patient satisfaction. Ocular surface staining, Schirmer test, TBUT, and conjunctival hyperemia scores improved significantly (all p < 0.001) for both eyes with SH-trehalose between baseline and day 84. Tolerance of SH-trehalose was good. CONCLUSIONS: SH-trehalose significantly improved the clinical signs and symptoms of DED after 84 days. Moreover, it significantly increased patient satisfaction and was well tolerated. TRIAL REGISTRATION: NCT04803240.

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