iStent Implants

Long Island Glaucoma Treatment – iStent – Eric D. Donnenfeld, MD, FAAO

Learn more about the iStent implant, which lowers intraocular pressure and helps to manage mild to moderate open angle glaucoma. Patients who have had the iStent placed may experience a reduction in the need for glaucoma medications. The iStent implant is inserted during cataract surgery.

New Technology to treat Glaucoma: The iStent® Trabecular Micro-Bypass

Technology has always played an important role in eye care. Today, almost every aspect of vision is connected to a product or procedure that wasn't available even ten short years ago. The cataract surgery is a good example of how innovations can make a difference. Every aspect of it utilizes recently developed technology that will help improve vision.

Today, this includes managing your mild-to-moderate open-angle glaucoma: because now we are able to add another step to cataract surgery that treats open-angle glaucoma in a completely new way. This is important because once diagnosed with open-angle glaucoma, most patients will spend the rest of your lives putting one, two or even three different kinds of drops in every day. Unfortunately, all of these drops will not only be inconvenient, but potentially very expensive. The iStent Trabecular Micro-Bypass Stent is designed to reduce eye pressure and it can be done at the same time you have cataract surgery.


iStent: the world's smallest medical implant delivers big results in mild-to-moderate open-angle glaucoma.

While mild-to-moderate open-angle glaucoma is very common, many people are unaware of their condition, especially in the early stages, when their vision may be unaffected. In many people, open-angle glaucoma is characterized by an increase in the intraocular pressure (IOP) of your eye. This pressure is caused by the buildup of fluid within the eye. Too much fluid raises pressure, which can cause the gradual loss of vision. And while glaucoma moves slowly, its damage is irreparable.

The world's tiniest medical device – iStent – is 20,000 times smaller than the intraocular lenses (IOL) used in your cataract surgery. But the size of iStent is only part of its story. By increasing the eye's ability to drain fluid, this technology is designed to reduce the pressure in your eye.

In a U.S. clinical study, 68% of glaucoma patients who received iStent remained medication free at 12 months while sustaining a target IOP of = 21 mm Hg vs. only 50% of patients who underwent cataract surgery alone.

For more information on the iStent implant please schedule a consultation with Dr. Donnenfeld. In addition to treating glaucoma, Dr. Donnenfeld is also recognized as a top Long Island LASIK surgeon.

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