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Related Experiment Video

Updated: Sep 13, 2025

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Trocar Insertion into the Pars Plana Using an Intraocular Endoscope-Holding Robot.

Kenta Ashikaga1, Yoshihito Sakanishi1, Toshiaki Hirakata1

  • 1Department of Ophthalmology, Juntendo University Graduate School of Medicine, Tokyo, Japan ; and.

Retina (Philadelphia, Pa.)
|July 25, 2025
PubMed
Summary

This study introduces a novel technique for trocar insertion during vitrectomy using the OQrimo robot for direct visualization. This method aids surgeons in precisely placing trocars, potentially improving outcomes for eyes with long axial lengths.

Keywords:
endoscopeendoscopic vitrectomyhigh myopiarobot surgeryrobotics

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Area of Science:

  • Ophthalmology
  • Surgical Robotics
  • Medical Device Technology

Background:

  • Vitrectomy for eyes with long axial lengths presents challenges for macular manipulation.
  • Trocar insertion distal to the limbus is a known beneficial technique in such cases.

Purpose of the Study:

  • To introduce a novel technique for trocar insertion under direct visualization during vitrectomy.
  • To utilize the intraocular endoscope-holding robot (OQrimo) for enhanced surgical precision.

Main Methods:

  • Seven eyes of seven patients undergoing vitrectomy were included.
  • Procedures utilized the OQrimo robot and Zeiss OPMI Lumera 700 with Resight.
  • An intraocular endoscope guided trocar insertion by visualizing the contralateral pars plana.

Main Results:

  • Surgeons successfully inserted trocars under endoscopic guidance using OQrimo.
  • The technique allowed visualization of the pars plana for accurate placement.
  • No adverse events were reported during trocar insertion.

Conclusions:

  • Trocar insertion using OQrimo is a promising technique for vitrectomy.
  • This method may enhance surgical outcomes, particularly in eyes with abnormal axial lengths like high myopia.