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A 2026 study compared PreserFlo MicroShunt implantation with trabeculectomy in patients with secondary open-angle glaucoma and uncontrolled intraocular pressure. Both procedures produced large pressure reductions by 12 months, with similar rates of medication use and complete surgical success under the study's definitions. PreserFlo was associated with fewer needling interventions, while the trabeculectomy group had better visual-acuity outcomes at the reported final visit. Although retrospective and therefore vulnerable to selection bias, the study is relevant to the expanding discussion around subconjunctival microshunt procedures. For surgeons, PreserFlo may offer a less tissue-disruptive alternative in selected eyes, but postoperative management remains an important part of the intervention. Needling, bleb modulation, hypotony surveillance, and visual recovery all matter when choosing between procedures. In secondary glaucoma, where underlying pathology and previous surgery can alter conjunctival behavior and healing, the decision should be individualized. The publication adds contemporary evidence that newer subconjunctival devices can achieve pressure control approaching established filtration surgery, while also highlighting that outcomes should be assessed across efficacy, visual function, and postoperative intervention burden rather than IOP alone.

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A 2026 study compared PreserFlo MicroShunt implantation with trabeculectomy in patients with secondary open-angle glaucoma and uncontrolled intraocular pressure. Both procedures produced large pressure reductions by 12 months, with similar rates of medication use and complete surgical success under the study's definitions. PreserFlo was associated with fewer needling interventions, while the trabeculectomy group had better visual-acuity outcomes at the reported final visit. Although retrospective and therefore vulnerable to selection bias, the study is relevant to the expanding discussion around subconjunctival microshunt procedures. For surgeons, PreserFlo may offer a less tissue-disruptive alternative in selected eyes, but postoperative management remains an important part of the intervention. Needling, bleb modulation, hypotony surveillance, and visual recovery all matter when choosing between procedures. In secondary glaucoma, where underlying pathology and previous surgery can alter conjunctival behavior and healing, the decision should be individualized. The publication adds contemporary evidence that newer subconjunctival devices can achieve pressure control approaching established filtration surgery, while also highlighting that outcomes should be assessed across efficacy, visual function, and postoperative intervention burden rather than IOP alone.
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