University of Iowa Health Care

Ophthalmology and Visual Sciences

iStent trabecular micro-bypass stent

Contributor: Jesse Vislisel, MD

Photographer: Brice Critser, CRA

The iStent trabecular micro-bypass stent is a "minimally invasive glaucoma surgery" (MIGS) intended to provide a modest reduction in intraocular pressure by direct cannulation of Schlemm's canal to improve aqueous outflow.  According to one review of the literature, patients who undergo impantation of one of these devices can expect 3-10% of additional pressure reduction over cataract surgery alone and may have some reduction in their postoperative medication burden.

istent Micro-bypass in place as see with gonioscopy lens


Wellik SR, Dale EA. A review of the iStent trabecular micro-bypass stent. Clinical Ophthalmology 2015; 9:677-684.

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last updated: 06/02/2015
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