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Updated: Sep 30, 2025

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[CyPass microstent trimming with special cutting forceps : Video article].

Cosima Rose1, Marc Schargus2

  • 1Klinik für Augenheilkunde, Asklepios Klinik Nord - Heidberg, Tangstedter Landstr. 400, 22417, Hamburg, Deutschland. c.rose@asklepios.com.

Der Ophthalmologe : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft
|March 15, 2022
PubMed
Summary
This summary is machine-generated.

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Trimming an improperly placed CyPass®-microstent can prevent further endothelial cell loss. This procedure involves carefully cutting the stent within the anterior chamber to preserve corneal health and vision.

Area of Science:

  • Ophthalmology
  • Surgical Innovation
  • Glaucoma Management

Background:

  • The CyPass®-microstent is used to treat glaucoma by reducing intraocular pressure.
  • Improper placement of the CyPass®-microstent into the anterior chamber can lead to significant corneal endothelial cell loss.
  • Early intervention is crucial to mitigate potential vision impairment.

Purpose of the Study:

  • To describe a surgical technique for trimming an anteriorly placed CyPass®-microstent.
  • To provide a method for managing CyPass®-microstent malposition and preventing further endothelial cell damage.

Main Methods:

  • A specialized 19-gauge cutter is introduced through a corneal paracentesis.
  • The anterior portion of the misplaced CyPass®-microstent is precisely trimmed.
Keywords:
Corneal endotheliumEndothelial cell lossMicroinvasive glaucoma surgeryPrimary open-angle glaucomaSurgery

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  • The excised stent fragment is removed, followed by viscoelastic aspiration and paracentesis hydration.

    • Main Results:

    • The described trimming technique has been performed without complications in the authors' clinic.
    • This method effectively addresses CyPass®-microstent malposition.
    • Postoperative care includes vision testing, intraocular pressure monitoring, and antibiotic application.

    Conclusions:

    • Trimming an anteriorly extending CyPass®-microstent is a viable option to prevent endothelial cell loss.
    • Further long-term studies are needed to fully assess the impact of this procedure on endothelial cell counts.