A new non-trocar system for 25-gauge transconjunctival pars plana vitrectomy

Am J Ophthalmol. 2005 Jun;139(6):1130-3. doi: 10.1016/j.ajo.2004.12.010.

Abstract

Purpose: To introduce a new non-trocar system for 25-gauge transconjunctival pars plana vitrectomy (PPV).

Design: Study of a new surgical instrument.

Methods: This new non-trocar system for 25-gauge transconjunctival PPV consists of a contact lens ring featuring four projections containing 1.0-mm diameter holes located 3.0 mm from the ring edge, a wedge-shaped 25-gauge infusion cannula, and two plugs.

Results: The ring is fixed with 7-0 silk sutures at the 3- and 9-o'clock positions on the limbus. Using the 25-gauge needle, three conjunctival and scleral incisions (n = 3) are made at the projection holes located inferotemporally, superonasally, and superotemporally. No intra- or postoperative complications were encountered in 14 patients treated by this non-trocar 25-gauge transconjunctival PPV.

Conclusion: Using the system introduced here, 25-gauge transconjunctival PPV can be performed without suturing sclerotomies and without intra- or postoperative complications.

MeSH terms

  • Conjunctiva / surgery
  • Humans
  • Needles
  • Sclerostomy
  • Surgical Instruments
  • Vitrectomy / instrumentation*