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Initial clinical experience with the trabecular micro-bypass stent in patients with glaucoma

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Abstract

This study was undertaken to evaluate the efficiency of a trabecular micro-bypass stent designed to allow direct aqueous drainage from the anterior chamber into Schlemm’s canal in patients with glaucoma. In this prospective case series of 6 patients with open-angle glaucoma, the microstent was inserted ab interno under local anesthesia in an ophthalmic operating room. Patients were seen postoperatively at 1 to 2 d, 1 wk, and 1, 2, 6, and 12 mo. All stents were successfully placed within Schlemm’s canal. Mean intraocular pressure (IOP) at preoperative baseline was 20.2±6.3 mm Hg (range, 14–31 mm Hg). Mean IOP decreased during the immediate postoperative period to approximately 12 to 13 mm Hg and was stabilized at 14 to 15 mm Hg with reduction of medication throughout 1 y of follow-up. No major complications occurred. According to observations reported in this feasibility study, the microstent was effective in reducing IOP and in decreasing the number of glaucoma medications required to control IOP. Implantation procedures were safe, and stents remained in place throughout the follow-up period. None of the complications traditionally associated with filtering surgery were reported. Further research on this stent in a larger group of patients is needed to assess its role in glaucoma therapy.

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Authors and Affiliations

  1. Klinik Vincentinum, Ausburg, Germany

    Detlev Spiegel MD

  2. Private Practice, Weinheim, Germany

    Wolfgang Wetzel MD

  3. Glaukos Corporation, Laguna Hills, California

    David S. Haffner BS

  4. Orange County Glaucoma, Santa Ana, California

    Richard A. Hill MD

Authors
  1. Detlev Spiegel MD
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  2. Wolfgang Wetzel MD
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  3. David S. Haffner BS
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  4. Richard A. Hill MD
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Spiegel, D., Wetzel, W., Haffner, D.S. et al. Initial clinical experience with the trabecular micro-bypass stent in patients with glaucoma. Adv Therapy 24, 161–170 (2007). https://doi.org/10.1007/BF02850004

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