The 25- and 23-gauge sutureless vitrectomy techniques decrease the surgical trauma and improve patients' postoperative comfort. The disadvantages of the 25-gauge system include pliable instrument and slower gel removal. The 23-gauge system provides faster speed of vitrectomy and the instruments have stiffer shafts, but it requires a larger incision. To circumvent some of these limitations, a new sutureless transconjunctival vitrectomy technique that combines 23- and 25-gauge cannulas and instruments was studied. Fifty-three patients underwent vitreoretinal surgery using two 25-gauge ports for the infusion and light probe and one 23-gauge port for the vitreous cutter and various instruments. No intraoperative or postoperative complications were noted and no cases required conversion to another technique.
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http://dx.doi.org/10.3928/15428877-20070701-16 | DOI Listing |
Retina
June 2024
Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
Purpose: Current treatments for retinoblastoma facilitate globe salvage but can result in vitreoretinal disorders that may require surgery. There is controversy on surgical approaches in eyes with retinoblastoma. Here we describe a transcorneal vitrectomy approach that avoids the use of chemotherapy or cryotherapy.
View Article and Find Full Text PDFBackground: The purpose of the study was to compare the mean post-operative pain in patients undergoing phacoemulsification for cataract with topical anaesthesia vs. retrobulbar anaesthesia.
Methods: An interventional study was carried out in a tertiary care hospital of Islamabad.
J Vitreoretin Dis
September 2024
Department of Ophthalmology and Visual Sciences, University of Alberta, Edmonton, AB, Canada.
Transl Vis Sci Technol
August 2024
Department of Ophthalmology, Westmead Hospital, Sydney, Australia.
Purpose: To investigate the real-world efficacy of a novel, low-cost glaucoma drainage device in canine and human patients.
Methods: A retrospective case series of 17 eyes in 14 canines and one eye of a human patient who each underwent novel drainage device implantation is described. This device was constructed by insertion and advancement of a 24-gauge cannula (canine) or 23-gauge cannula (human) perpendicularly through five adjacent tubes of a 25-mm Yeates surgical drain.
Bioengineering (Basel)
July 2024
Jones Eye Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
Infusion-related iatrogenic retinal breaks (IRBs) are a significant complication in vitrectomies, particularly when smaller-gauge cannulas are used during fluid infusion. Using two-dimensional finite element analysis (FEA), we analyzed forces exerted on the retina from different cannulas: traditional 25-gauge, 20-gauge, 23-gauge, and 27-gauge, then investigated four alternative new cannula designs: (A) oblique orifices, (B) external obstruction, (C) side ports, and (D) perpendicular orifices. The analysis revealed that the standard 25-gauge cannula had a force of 0.
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