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Related Experiment Video

Updated: May 19, 2026

Corneal Donor Tissue Preparation for Descemet's Membrane Endothelial Keratoplasty
10:46

Corneal Donor Tissue Preparation for Descemet's Membrane Endothelial Keratoplasty

Published on: September 17, 2014

Novel surgical instruments facilitating Descemet membrane dissection.

Efdal Yoeruek1, Karl-Ulrich Bartz-Schmidt, Bartz Schmidt

  • 1Department of Ophthalmology, Eberhard-Karls University, Tuebingen, Germany. efdal.yoeruek@med.uni-tuebingen.de

Cornea
|August 21, 2012
PubMed
Summary

New curvilinear forceps significantly reduce Descemet membrane (DM) preparation time and improve endothelial cell quality compared to the 1-point forceps technique. This leads to less tissue wastage and faster surgical preparation.

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Area of Science:

  • Ophthalmology
  • Surgical Innovation
  • Corneal Transplantation

Background:

  • Descemet membrane (DM) dissection is a critical step in endothelial keratoplasty.
  • Current techniques using 1-point forceps can be time-consuming and may cause endothelial cell damage.

Purpose of the Study:

  • To introduce and evaluate two new untoothed curvilinear forceps for DM dissection.
  • To compare the efficacy of curvilinear forceps with the traditional 1-point forceps technique.

Main Methods:

  • Sixteen corneoscleral rims underwent DM separation using either 1-point or curvilinear forceps.
  • Preparation time, handling, and endothelial cell viability (assessed by calcein AM/ethidium homodimer-1 and DAPI staining) were analyzed.

Main Results:

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  • All prepared DMs were suitable for transplantation in both groups.
  • Curvilinear forceps significantly reduced preparation time (6.4 min vs. 11.0 min, P=0.008).
  • Endothelial cell death ratio was significantly lower with curvilinear forceps (3.4% ± 2.0% vs. 7.2% ± 3.0%, P=0.04).

Conclusions:

  • The new curvilinear forceps technique offers a significant reduction in preparation time.
  • This technique results in higher tissue quality, evidenced by a lower endothelial cell death ratio.
  • The findings suggest reduced tissue wastage and improved efficiency in corneal transplantation procedures.