Background And Objective: Until now, UV lasers could not be applied to vitreoretinal surgery because of the absence of a practical beam guiding system. A flexible, freely mobile hollow core waveguide, capable of delivering UV laser light, was recently developed. We evaluated the feasibility of this UV laser guiding system for vitreoretinal surgery in enucleated porcine and rabbit eyes and in vivo on rabbit retina.
Materials And Methods: 193-nm argon fluoride (ArF) excimer laser and a 5th harmonic Nd:YAG laser with the wavelength of 213 nm were used as a light source. A hollow core waveguide was connected to a handpiece with a 20-gauge endoprobe as an instrument for vitreoretinal surgery.
Results: Cutting of the retina was possible only with contact technique. With a selected repetition rate of 20 Hz, sharp, full-depth dissection of porcine retinas was achieved only with 1.0 J/cm2. With the repetition rate of 50 Hz, even 0.05 J/cm2 could incise the total thickness of rabbit retina with no histological damage of the underlying retinal pigment epithelium. The ease in using the instrument for vitreoretinal surgery was confirmed by the in vivo experiment.
Conclusion: This study revealed the potential use of the new type of the UV laser scalpel, connected to a hollow core waveguide, to perform precise, "cold," and tractionless cutting during vitreoretinal surgery.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/lsm.20480 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Simplified segmental scleral buckling without localization and cryopexy: A retrospective comparison with conventional segmental scleral buckling.
Taiwan J Ophthalmol
January 2024
Department of Ophthalmology, National Taiwan University Hospital, Yunlin Branch, Yunlin, Taiwan.
Purpose: The aim of this study was to propose a simplified segmental scleral buckling (SSSB) technique that does not require break localization for less-experienced vitreoretinal surgeons.
Materials And Methods: This retrospective study compared the clinical results of 46 conventional and 23 SSSB (conventional segmental SB [CSSB] and SSSB, respectively) procedures in a tertiary referral retinal center in Taiwan between 2008 and 2019. In the CSSB group, breaks were localized during surgery.
Reshaping vitreoretinal surgery: Intraoperative optical coherence tomography as a tool for enhancing surgical decision-making in complex cases.
Taiwan J Ophthalmol
December 2024
Singapore National Eye Centre, Singapore Eye Research Institute, Singapore.
Intraoperative optical coherence tomography (iOCT) has been applied and studied in a variety of vitreoretinal surgeries for its feasibility, safety, and outcomes for years. Common scenarios include membrane peeling procedures, retinal detachments, choroidal-retinal biopsies, Argus implants, and subretinal injections. iOCT offers the surgeon a better understanding of the retinal microarchitectural changes and timely intraoperative feedback, directing a future view of precision surgery.
View Article and Find Full Text PDFVitrectomy for diabetic retinopathy: A review of indications, techniques, outcomes, and complications.
Taiwan J Ophthalmol
January 2024
Smt. Kanuri Santhamma Center for Vitreoretinal Diseases, Anant Bajaj Retina Institute, LV Prasad Eye Institute, Hyderabad, Telangana, India.
Diabetic retinopathy is one of the most severe forms of retinopathy and a leading cause of blindness all over the world. Of a greater concern is proliferative diabetic retinopathy which leads to vitreous haemorrhage and tractional retinal detachment in such cases. A majority of these cases require a surgical intervention to improve vision and prevent further vision loss.
View Article and Find Full Text PDFFaster referral and surgical intervention for rhegmatogenous retinal detachment during COVID-19: a comparison of pre- and during-pandemic cases.
Sci Rep
January 2025
Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran.
Article Synopsis
- The study investigated how the COVID-19 pandemic affected patients with rhegmatogenous retinal detachment (RRD) at Farabi Eye Hospital in Iran, comparing patients from before and during the pandemic.
- A total of 375 patients were analyzed, revealing that those referred during the pandemic had quicker referral and surgical wait times, but no significant changes in clinical characteristics or surgical outcomes.
- The use of general anesthesia increased during the pandemic period, prompting the need for further research into this trend.
Evaluation of (Shared) Autonomy in Robot-Assisted Vitreoretinal Surgery Using a Surgical Model.
Int J Med Robot
February 2025
Department of Mechanical Engineering, The University of Tokyo, Bunkyo, Japan.
Background: Robot-assisted vitreoretinal surgery makes it easier for the surgeons to perform precise and dexterous manipulations required in vitreoretinal procedures.
Methods: We systematically evaluated manual surgery, conventional two-hand teleoperation, a novel one-hand teleoperation, and automation in a needle positioning task using a realistic surgical eye model, measuring the expert surgeon's performances and the novice's learning curves.
Results: The proposed one-hand teleoperation improved the positioning accuracy of expert surgeons , enabled novices to achieve a consistent accuracy more quickly , decreased the novice's workload more quickly , and made it easier for novices to learn to conduct the task quickly .
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!