ArticleOphthalmology and therapy2025
Association Between Preserved Glaucoma Eye Drops Exposure and Glaucoma Surgery Occurrence: A Nationwide 10-Year Outcome Study.
Article in Ophthalmology and therapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionPreserved eye drops induce ocular toxicity, which may impair the management of glaucoma. This study aimed at assessing the association between the level of exposure to preserved glaucoma eye drops and the occurrence of glaucoma surgery.
methodsThis retrospective population-based cohort study included all patients ≥ 18 years old with a first glaucoma eye drops claim in the French national health insurance database between 1 January 2009 and 31 December 2017. A look-back period of 3 years before inclusion was used to select incident cases. Included patients were followed up until 31 December 2018. Patients were grouped according to the level of preservative exposure during follow-up: 0% (only preservative-free [PF] eye drops), "low-mixed" (both preserved and PF eye drops, with < 50% preserved), "high-mixed" (both preserved and PF eye drops, with ≥ 50% preserved), and 100% (preserved eye drops only) exposure. The occurrence of glaucoma surgery was analyzed for each group, and its association with preservative exposure estimated using multivariate Cox regression models, adjusted on age, sex, history of high blood pressure and cardio-neurovascular disease, glaucoma disease severity, and year of patient inclusion.
resultsWe included 664,494 patients (57.0% women; median age 66.0 [interquartile range 57.0-75.0] years) with a first glaucoma eye drops claim and a median follow-up of 4.8 (2.8-7.1) years. Among them, 8,467 (1.3%) had glaucoma surgery during follow-up. The hazard ratio of glaucoma surgery increased with the level of exposure to preservatives from 2.12 (95% confidence interval 1.81-2.48) in the low-mixed group to 4.57 (3.94-5.29) in the 100% preserved group compared with the 0% preserved exposure group.
conclusionsThe risk of glaucoma surgery was associated with the level of exposure to preserved glaucoma eye drops in this nationwide cohort study. Large-scale, randomized studies would be beneficial to investigate whether PF eye drops could decrease or delay glaucoma surgery occurrence.
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