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Excerpt:

Introduction

For people with open-angle glaucoma, surgical options aim to lower intraocular pressure (IOP) by creating a new drainage pathway for eye fluid (aqueous humor). The traditional gold-standard surgery is trabeculectomy, a technique that creates a small hole under a scleral flap, forming a filtering bleb under the conjunctiva. In recent years, newer implants have emerged. These include tube shunts (Ahmed, Baerveldt, Molteno implants) that channel fluid from the front of the eye to a plate under the conjunctiva, and minimally-invasive glaucoma surgeries (MIGS) such as the XEN Gel Stent and PreserFlo MicroShunt.

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