---
title: What is RVI (trabecular bypass stent)?
description: "A trabecular bypass stent such as the RVI device is a tiny implant placed in the eye's drainage angle to create a direct channel through the trabecular meshwork. ## How trabecular bypass stents work In open-angle glaucoma, resistance at the…"
url: "https://bluefinvision.com/knowledge-base/topics/treatments-procedures/what-is-rvi-trabecular-bypass-stent/"
updated: "2025-12-31"
category: "Treatments & Procedures"
---

# What is RVI (trabecular bypass stent)?

A trabecular bypass stent such as the RVI device is a tiny implant placed in the eye's drainage angle to create a direct channel through the trabecular meshwork.

## How trabecular bypass stents work

In open-angle glaucoma, resistance at the meshwork hinders fluid escape. The stent bridges this barrier, allowing aqueous humour to flow more easily into Schlemm's canal.

- Implanted using a micro-incision, often during cataract surgery
- Typically used for mild to moderate open-angle glaucoma
- Designed to be permanent and generally invisible externally
- May be used singly or in multiple placements depending on design

## Expected benefits and limits

These devices offer pressure reduction with minimal tissue disruption. They are not usually sufficient for very advanced disease needing very low pressures.

- Can reduce the number of daily glaucoma drops
- Follow-up is required to confirm sustained pressure control
- Not appropriate for angle-closure or heavily scarred angles
- Choice among different stent types depends on surgeon experience and patient needs