Abstract
Traditional Glaucoma implants divert the aqueous humor into the subconjunctival space. These include devices that drain the aqueous at the limbus (e.g., Express shunt), 3–5mm posterior to the limbus (e.g., Xen and PreserFlo), and 8–10mm posterior to the limbus (e.g., traditional glaucoma drainage implants such as Ahmed, Molteno, and Baerveldt). In the past decade, newer implants have been introduced to bypass the trabecular meshwork (e.g., iStent and Hydrus) into the Schlemm's canal or to access the suprachoroidal space (e.g., Cypass, iStent Supra, and AlloFlo). This chapter takes a deeper dive into the polymers being used in these devices and their contribution to their overall success.