Clinical trials: Pars Plana Vitrectomy
Intravitreal Bevacizumab Injection, Pars Plana Vitrectomy
Preoperative Injection of Bevacizumab Prior to Vitreoretinal Surgery in Diabetic Tractional Retinal Detachment
Vitreoretinal surgery for epiretinal proliferation tractional retinal detachment associated with proliferative diabetic retinopathy (PDR) is often complicated by hemorrhage from fibrovascular tissue.
- Conditions
- Intravitreal Bevacizumab Injection, Pars Plana Vitrectomy, Tractional Retinal Detachment, Diabetic Retinopathy
- Trial name
- NCT00548197
- Testing
- Bevacizumab
- Where
- Iran
- Volunteers
- 40 people
- Sponsor
- Iran University of Medical Sciences
Ocular Trauma
The Innovative Appliance of Cohesive Viscoelastic During Pars Plana Vitrectomy in Complicated Ocular Trauma
Viscoelastic is a powerful tool in pars plana vitrectomy(PPV) surgery relative to perfluorocarbon liquid because it has the properties to dilate and engorge the retina and restore the detached retina to its original position.
- Trial name
- NCT07038668
- Testing
- Using of viscoelastic during the operation, No using of viscoelastic during the operation
- Volunteers
- 420 people
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Diffuse Diabetic Macular Edema
Vitrectomy and Bevacizumab for Diffuse Diabetic Macular Edema
To Evaluate combined effect of vitrectomy and bevacizumab to stabilize retinal thickness and visual acuity in patients with diffuse diabetic macular edema and their relation to renal disease.
- Trial name
- NCT00571142
- Testing
- Bevacizumab + Pars plana vitrectomy
- Where
- Mexico
- Volunteers
- 20 people
- Sponsor
- Asociación para Evitar la Ceguera en México
Cataract, Nuclear Progressive
The Post-Vitrectomy Lenstatin™ Study
To determine the efficacy of Lenstatin™, an over-the-counter nutritional supplement, in inhibiting the progression of nuclear cataract in eyes after pars plana vitrectomy.
- Trial name
- NCT02131194
- Testing
- Lenstatin
- Where
- United States
- Volunteers
- 20 people
- Sponsor
- Lenstatin LLC
Pars Plana Vitrectomy, Scleral Buckling
Necessity of Post-operative Eye Drops
The goal of this clinical study is to determine if antibiotic eye drops are needed after retinal surgery to prevent infection. Currently, patients are prescribed antibiotic eye drops to use for several weeks after they undergo…
- Conditions
- Pars Plana Vitrectomy, Scleral Buckling, Surgical Outcomes, Infection Prophylaxis
- Trial name
- NCT07396831
- Where
- United States
- Volunteers
- 48 people
- Sponsor
- Loma Linda University
Macular Edema Due to Diabetes Mellitus, Vitreous Hemorrhage
Comparison of Restoration in Vitreous Hemorrhage Patients With DME After or Not Removing Inner Limiting Membrane
This study is conducted to compare the anti-VEGF effect and visual function in vitreous hemorrhage patients with diabetic macular edema after pars plana vitrectomy with inner limiting membrane peeling or not
- Trial name
- NCT05529589
- Where
- China
- Volunteers
- 120 people
- Sponsor
- Second Affiliated Hospital, Zhejiang University, School of Medicine
Non Proliferative Diabetic Retinopathy
Pars-plana Vitrectomy vs Panretinal Photocoagulation for Severe NPDR
It is estimated that there are about 600 million diabetes mellitus (DM) patients all over the world until 2040，and almost 50% of whom have some degree of diabetic retinopathy (DR) at any given time.
- Trial name
- NCT04103671
- Testing
- Prompt panretinal photocoagulation, 25G Pars-plana vitrectomy
- Where
- China
- Volunteers
- 272 people
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Retinal Detachment Rhegmatogenous
Use of Preoperative Gas in Eyes With Macula-off Rhegmatogenous Retinal Detachment (RRD)
The purpose of this study is to evaluate whether a preoperative intraocular gas injection improves visual outcomes in patients with a macula-off rhegmatogenous retinal detachment (RRD).
- Trial name
- NCT07855770
- Testing
- Intravitreal 100% C3F8 Injection, Pars plana vitrectomy or pars plana vitrectomy with scleral buckle
- Where
- 2 sites in United States
- Volunteers
- 190 people
- Sponsor
- Wills Eye
Retinal Disorders
Anesthesia for Pars Plana Vitrectomy (PPV) With Insulin Needle
Periocular blockade with 12.5 mm needle is as effective as block with 25 mm needle for patients undergoing Pars Plana Vitrectomy.
- Trial name
- NCT00735657
- Testing
- needle, Pars Plana Vitrectomy
- Where
- Saudi Arabia
- Volunteers
- 120 people
- Sponsor
- King Khaled Eye Specialist Hospital
Retinal Edema
Suprachoroidal Injection of Triamcinolone Acetonide in Resistant Diabetic Macular Edema, CRVO, Pseudophakic Cystoid Macular Edema and Diabetic Macular Edema Following Pars Plana Vitrectomy
Prospective interventional study on 60 eyes of resistant diabetic macular edema and central retinal vein occlusion that will receive suprachoroidal injection of Triamcinolone Acetonide (SCTA).
- Trial name
- Resistant (NCT04690608)
- Testing
- Triamcinolone Acetonide 40Mg/Ml Inj,Susp_#1
- Where
- Egypt
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Tanta University
Rhegmatogenous Retinal Detachment
Healaflow Patch for the Treatment of Rhegmatogenous Retinal Detachment
To report the surgical results of primary rhegmatogenous retinal detachment (RRD) repaired by 27G pars plana vitrectomy (PPV) combined with Healaflow patch and air tamponade, and do not need prone position postoperation.
- Trial name
- NCT03542162
- Testing
- Healaflow
- Volunteers
- 37 people, healthy volunteers welcome
- Sponsor
- Tianjin Medical University Eye Hospital
Dislocated Lens, Pars Plana Vitrectomy
Effectiveness and Safety of 25-Gauge Needle-Assisted Phacoemulsification of Dislocated Intravitreal Lens Nucleus
The goal of this observational study is to learn about the effects of 25-gauge (G) needle-assisted phacoemulsification to remove dislocated intravitreal lens nuclei.
- Conditions
- Dislocated Lens, Pars Plana Vitrectomy, Phacoemulsification, Needle
- Trial name
- NCT06709378
- Where
- China
- Volunteers
- 9 people
- Sponsor
- Changzhou No.2 People's Hospital
Macular Holes
Full-Thickness Macular Hole Surgery: A Comparison of Ten Techniques
This study compares ten modern vitreoretinal surgical techniques for full-thickness macular hole repair. Participants will be randomly assigned to one of the surgical approaches during pars plana vitrectomy, using stratified…
- Trial name
- FTMH-10 (NCT07606404)
- Testing
- Pars Plana Vitrectomy (PPV)-Based Macular Hole Surgery, Autologous Platelet-Rich Plasma (PRP), Human Amniotic Membrane (hAM) Graft
- Where
- Kazakhstan
- Volunteers
- 120 people
- Sponsor
- Kazakh Eye Research Institute
Diabetic Retinopathy, Macular Edema
20- Versus 23- Gauge System for Pars Plana Vitrectomy
The aim of the present study is to compare the functional and clinical differences and advantages between a standard operating system and a newly developed even smaller system for pars plana vitrectomy.
- Conditions
- Diabetic Retinopathy, Macular Edema, Postoperative Complications, Vitreous Hemorrhage
- Trial name
- NCT00411970
- Testing
- 20- and 23 gauge vitreoretinal surgery systems
- Where
- Austria
- Volunteers
- 60 people
- Sponsor
- The Ludwig Boltzmann Institute of Retinology and Biomicroscopic Laser Surgery
Rhegmatogenous Retinal Detachment With Grade C Proliferative Vitreoretinopathy
Comparison of Visual Outcomes of Pars Plana Vitrectomy With and Without Injection Clexane for Rhegmatogenous Retinal Detachment Proliferative Vitreoretinopathy
This interventional prospective study was conducted in the Department of Ophthalmology at Lahore General Hospital, Lahore. The study included 60 male and female patients aged 18-65 years who had rhegmatogenous retinal detachment…
- Trial name
- NCT07787377
- Testing
- Enoxaparin Sodium, Pars Plana Vitrectomy
- Where
- Pakistan
- Volunteers
- 60 people
- Sponsor
- Lahore General Hospital
Retinal Displacement After Retinal Detachment Surgery
Influence of Perfluorocarbon Liquid (LIQUID) During Pars Plana Vitrectomy on Retinal Vessel Displacement in Primary Macula-involving Rhegmatogenous Retinal Detachment
Rhegmatogenous retinal detachment (RRD) is an acute, sight threatening condition, with an incidence of approximately 10 per 100,000 people.
- Trial name
- LIQUID (NCT07027098)
- Testing
- Perflurocarbon liquid, Without Perflurocarbon liquid
- Where
- United Kingdom
- Volunteers
- 292 people
- Sponsor
- Norfolk and Norwich University Hospitals NHS Foundation Trust
Rhegmatogenous Retinal Detachment, Toxic Effect of Silicone
The Influence of Silicone Oil on Nerve Fiber Layer Thickness After Pars Plana Vitrectomy
The aim of the study is to evaluate the influence of silicone oil on thickness of the retinal nerve fiber layer by using optical coherence tomography (OCT) in patients following pars plana vitrectomy.
- Conditions
- Rhegmatogenous Retinal Detachment, Toxic Effect of Silicone, Glaucoma Due to Silicon Oil
- Trial name
- NCT01255306
- Testing
- Optical coherence tomography, Local medical treatment of raised intraocular pressure
- Where
- Croatia
- Volunteers
- 60 people
- Sponsor
- University Hospital Sestre Milosrdnice
Diabetic Retinopathy, Macular Edema
PPV With Internal Limiting Membrane Peeling for Treatment-Naïve DME
Treatment-naïve subjects with center-involved diabetic macular edema undergoing pars plana vitrectomy with internal limiting membrane peeling will have similar visual outcomes but better anatomical outcomes compared to subjects…
- Trial name
- NCT03660345
- Testing
- PPV/MP, Intravitreal injection
- Where
- Mexico
- Volunteers
- 11 people
- Sponsor
- Rush Eye Associates
Diabetic Macular Edema
Safety and Effectiveness of Ozurdex Steroid Implants for DME After Vitrectomy Surgery
Currently medications injected intravitreally in previously vitrectomized eyes have a very short half-life due to enhanced clearance of the drug.
- Trial name
- NCT01788475
- Testing
- Dexamethasone
- Where
- United States
- Volunteers
- 3 people
- Sponsor
- Lahey Clinic
Diabetic Retinopathy, Vitreous Hemorrhage
Preoperative Bevacizumab for Vitreous Hemorrhage
The purpose of this study is to determine whether preoperative intravitreal bevacizumab is effective in reducing intra-operative and postoperative bleeding in diabetic patients submitted to pars plana vitrectomy for vitreous…
- Trial name
- IBEVI (NCT00596297)
- Testing
- bevacizumab, pars plana vitrectomy
- Where
- Brazil
- Volunteers
- 16 people
- Sponsor
- University of Sao Paulo