When managing open-angle glaucoma or ocular hypertension, the primary goal is always the same: lowering intraocular pressure (IOP) to protect the optic nerve and safeguard your vision. However, the methods used to achieve this goal have evolved dramatically over the years. Rather than relying solely on everyday prescription eye drops, modern advancements offer innovative alternatives designed to make pressure control smoother and more reliable.

For patients exploring beyond conventional drops, two popular options frequently come up: the iStent® and DURYSTA™. While both aim to reduce eye pressure, they work through entirely different mechanisms, timelines, and surgical approaches.

What is the iStent?

Recognized as the smallest medical device ever approved by the FDA, the iStent is a microscopic titanium stent designed for micro-invasive glaucoma surgery (MIGS).

• How it works: In a healthy eye, fluid continuously drains through a spongy tissue called the trabecular meshwork. In patients with open-angle glaucoma, this natural drainage pathway becomes clogged, causing fluid to back up and pressure to rise. The iStent is placed directly into the eye’s drainage system to create a permanent, open bypass through that blockage, restoring natural fluid outflow.
• The procedure: The iStent is uniquely designed to be implanted during cataract surgery. Because it is added seamlessly into the cataract procedure, it does not require a separate incision or extra recovery time.
• Long-term impact: Once in place, the titanium device is permanent, requires no maintenance, and is completely invisible and unnoticeable to the patient. Clinical studies show that many patients who receive an iStent are able to successfully reduce or even eliminate their daily glaucoma eye drops.

What is DURYSTA™?

Rather than modifying the eye’s drainage anatomy with a permanent hardware device, DURYSTA™ takes a pharmaceutical, sustained-release approach.

• How it works: DURYSTA™ is the first intracameral, biodegradable sustained-release implant. Roughly the size of a tiny grain of rice, it contains a proven glaucoma medication that is placed directly inside the front chamber of the eye by an eye care specialist.
• The procedure: This is a quick, in-office procedure that takes just minutes and does not require surgery or an operating room.
• Long-term impact: The implant automatically and continuously dispenses medication to lower eye pressure over several months. Because the implant is fully biodegradable, it dissolves naturally over time, meaning it does not need to be physically removed.

Key Differences: iStent vs. DURYSTA™

While both solutions are designed to liberate patients from the constant frustration of daily eye drops, they differ in several core ways:

1. Physical Nature:
   • iStent is a permanent, microscopic medical-grade titanium device.
   • DURYSTA™ is a temporary, biodegradable drug-delivery implant that dissolves entirely on its own.
2. Mechanism of Action:
   • iStent mechanically alters and re-opens your eye’s native internal plumbing to improve fluid drainage.
   • DURYSTA™ continuously releases therapeutic medication inside the eye to suppress fluid production and enhance outflow chemically.
3. Timing of Procedure:
   • iStent is specifically indicated for and implanted concurrently with cataract surgery.
   • DURYSTA™ is administered as a standalone, in-office procedure whenever a patient needs a reliable break from topical drops.

Personalized Options at The Eye Center

Deciding which path is right for your eyes depends on your unique diagnosis, anatomical structure, and lifestyle goals. Whether you are preparing for upcoming cataract surgery and want to incorporate the microscopic iStent, or you are looking for a standalone, sustained-release pharmaceutical option like DURYSTA™ to manage daily pressure, expert care is close to home.

Both of these advanced treatments are available at The Eye Center. Schedule a consultation with our team today to discuss your glaucoma management plan and find the ideal solution for protecting your vision.