The PRESERFLO MicroShunt is a tiny, biocompatible tube that creates a controlled drainage channel to lower eye pressure. It is implanted through a small incision behind the upper eyelid and stays in the eye permanently.
It is suitable for some patients with primary open-angle glaucoma where drops or laser have not controlled the pressure well enough, or where the disease is progressing and surgery is needed. The expandable questions below explain more about glaucoma, how an aqueous shunt works, the benefits and how to prepare.