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Optical coherence tomography of the suprachoroid after CyPass Micro-Stent implantation for the treatment of open-angle glaucoma
  1. Hady Saheb1,
  2. Tsontcho Ianchulev2,
  3. Iqbal ‘Ike’ K Ahmed3
  1. 1Department of Ophthalmology, McGill University, Montreal, Quebec, Canada
  2. 2Department of Ophthalmology, University of California San Francisco, San Francisco, California, USA
  3. 3Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Ontario, Canada
  1. Correspondence to Dr Iqbal ‘Ike’ K Ahmed, Department of Ophthalmology and Vision Sciences, University of Toronto, Credit Valley EyeCare, 3200 Erin Mills Parkway, Unit 1, Mississauga, ON, Canada L5L 1W8; ikeahmed{at}mac.com

Abstract

Background/Aims To evaluate the supraciliary space (SCS) with anterior segment optical coherence tomography (OCT) imaging after CyPass Micro-Stent implantation.

Methods The SCS was imaged with OCT after microstent implantation at 1, 6 months, and 1 year. Images were graded on a scale of 0–4 for morphological features indicative of fluid presence within, or drainage through, the SCS.

Results 35 patients underwent ab-interno microstent implantation. Mean age was 68.6±10.2 years. Baseline mean intraocular pressure (IOP) was 21.9±6.1 mm Hg on average of 3.0 topical medications. At 1 month, the fluid space grade was ≥1 for 96% (24/25) of patients for tenting, 79% (15/19) for fluid posterior to the microstent, and 89% (8/9) for fluid surrounding the microstent. The mean (composite) score for all features was 2.5±0.99. The majority of patients maintained aqueous fluid through 12 months.

Conclusions OCT imaging provides adequate visualisation of the angle, the SCS and aqueous fluid drainage after implantation of a suprachoroidal microstent into the SCS.

  • Anatomy
  • Glaucoma
  • Imaging
  • Intraocular pressure
  • Treatment Surgery

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