Clinical trials: Vitreoretinal Surgery
Macular Holes
Evaluation of Anatomic and Visual Outcomes of Initially Closed Macular Holes
To evaluate the anatomic and visual outcomes in patients with initially closed macular holes after vitreoretinal surgery and with one to seven years of follow-up.
- Trial name
- NCT01229657
- Where
- China
- Volunteers
- 79 people
- Sponsor
- Sun Yat-sen University
Intraocular Pressure
iCare vs Tonopen vs Goldmann Applanation Post-vitrectomy Surgery
The purpose of the study is to compare the measurement of pressure inside the eye using three different FDA-approved devices (Icare, Tonopen, and Goldmann applanation).
- Trial name
- NCT01786954
- Testing
- Icare rebound tonometry, Tonopen applanation, Goldmann applanation
- Where
- United States
- Volunteers
- 68 people
- Sponsor
- Duke University
Macular Holes
Air Tamponade in Macular Holes < 400 μm
Macular hole is a hole formation which takes place in the center of the retina. Such a hole needs surgical steps in order to close. Closure of the macular hole will lead to a substantially improvement of vision in most cases.
- Trial name
- NCT02028481
- Testing
- Postoperative air tamponade
- Where
- Norway
- Volunteers
- 13 people
- Sponsor
- Helse Stavanger HF
Vitreoretinal Surgery Under Sub-Tenon's Anesthesia
Dexmedetomidine as an Adjuvant for Sub-Tenon's Anesthesia
The investigator evaluated the motor and sensory block durations and the postoperative analgesic effects of adding dexmedetomidine to levobupivacaine for sub-Tenon's anesthesia in patients undergoing vitreoretinal surgery.
- Trial name
- Precedex (NCT02327156)
- Testing
- dexmedetomidine
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Magrabi Eye & Ear Hospital
Surgery
Topical 0.4% Ketorolac and Vitreoretinal Surgery
To determine whether use of topical 0.4% ketorolac has any effect on pupil size during vitreoretinal surgery.
- Trial name
- NCT00576329
- Testing
- Ketorolac
- Where
- United States
- Volunteers
- 76 people, healthy volunteers welcome
- Sponsor
- Emory University
Apnea
Rates of Apnea in Patients Undergoing Vitreoretinal Surgery
The purpose of this study is to determine if apnea (the stopping of breathing) occurs in patients undergoing undergoing monitored anesthesia care (MAC) for vitreoretinal surgery
- Trial name
- NCT01745341
- Where
- United States
- Volunteers
- 113 people
- Sponsor
- Stanford University
Macular Holes, Intraocular Lens Opacification
Oral Sedation in Vitreoretinal Surgery
The purpose of this study is to compare the efficacy of oral sedation to intravenous sedation with anesthesiology support and monitoring.
- Conditions
- Macular Holes, Intraocular Lens Opacification, Vitrectomy, Vitreous Hemorrhage
- Trial name
- NCT04346095
- Testing
- Oral Sedatives with or Without Analgesia, Intravenous Sedatives with or Without Analgesia
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Rocky Vista University, LLC
Macular Pucker, Macular Hole
Membrane Blue Versus Infracyanine Green
To compare possible toxicities of membrane blue and infracyanine green in vivo by macular function and peripheral visual field.
- Trial name
- NCT00555269
- Volunteers
- 30 people
- Sponsor
- The Ludwig Boltzmann Institute of Retinology and Biomicroscopic Laser Surgery
Vitreoretinal Surgery, Cognitive Function Abnormal
The Effect of Retrobulbar Block for Eye Surgery on Brain Oxygenation and Cognitive Functions in Elderly Patients
The investigators measured changes in cerebral oxygen saturation (rSO2) and MMSE scores after retrobulbar block performed with levobupivacaine and lidocaine in patients undergoing vitreoretinal surgery.A total of 66 patients over…
- Conditions
- Vitreoretinal Surgery, Cognitive Function Abnormal, Intraoperative Monitoring
- Trial name
- NCT03189329
- Testing
- 2% lidocaine hydrochloride, 0.5% levobupivacaine
- Where
- Turkey (Türkiye)
- Volunteers
- 66 people
- Sponsor
- Cengiz KAYA
Patients With Highly Myopic Eyes
3D Visualization System for Vitreoretinal Diseases in Highly Myopic Eyes
To investigate the surgical outcomes and intraoperative parameters evaluation of 3D visualization system for vitreoretinal diseases in highly myopic eyes
- Trial name
- NCT05367193
- Testing
- pars plana vitrectomy, NGENUITY® 3D Visualization System (Alcon, TX, USA)
- Where
- Taiwan
- Volunteers
- 40 people
- Sponsor
- National Taiwan University Hospital
Intraocular Pressure
Evaluation of Intraocular Pressure Following a Vitreoretinal Surgery Using Goldmann Applanation Tonometry, Icare and Accupen
The goal of this prospective controlled study is to measure the reliability of two intraocular pressure (IOP)-measuring instruments in comparison to the gold standard, Goldmann applanation tonometry (GAT) following vitreo-retinal…
- Trial name
- NCT06522867
- Testing
- Intraocular pressure measure
- Where
- Canada
- Volunteers
- 67 people
- Sponsor
- CHU de Quebec-Universite Laval
Vitreoretinal Surgery
Comparative Study 23G Versus 27G Vitrectomy
Investigator-initiated, comparative double-arm, mono-center, prospective, interventional case study to determine whether ultra-small gauge surgery (27G gauge needle) improves postoperative outcome and patient morbidity.
- Trial name
- 23Gvs27G (NCT04216108)
- Testing
- Vitrectomy (23G gauge needle), Vitrectomy (27G gauge needle)
- Where
- Belgium
- Volunteers
- 80 people
- Sponsor
- Prof. Dr. Peter Stalmans
Ophthalmological Virtual Surgery Training
Virtual Surgery: Construction of a Training Program and Analysis of Significant Factors for Operating Performance
Operations in the retina and removal of the vitreous (vitrectomy) is a type of operation where the surgeon requires much training and where there is an increased risk of operative complications in the early stage.
- Trial name
- NCT02559661
- Testing
- Training on a virtual simulator in eye surgery
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Odense University Hospital
Vitreoretinal Surgery
Foldable Capsular Vitreous Body Implantation Study
This study is intended to evaluate the clinical usefulness of the FCVB in its on-label use, but in a different racial type than studies till now (Asians only).
- Trial name
- FCVB (NCT03390244)
- Testing
- Foldable Capsular Vitreous Body Implant
- Where
- Belgium
- Volunteers
- 2 people
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Vitreoretinal Surgery
Comparative Study 27G Vitrectomy vs Larger Gauge Surgery
Two-arm, mono-center, prospective, interventional comparative case study to compare postoperative recovery between the 27G and larger gauge surgical approach.
- Trial name
- NCT04412525
- Testing
- vitrectomy (27G gauge or larger needle)
- Where
- Belgium
- Volunteers
- 50 people
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Cataract, Vitreoretinal Abnormality
Influence of Different Tamponade Eyes on IOL-capsular Complex
Cataract and vitreoretinal diseases often occur simultaneously or cataract is a predictable consequence of vitreoretinal surgery.A combined surgery called phacovitrectomy, has been proved to be comparably safe and effective…
- Trial name
- NCT05296486
- Testing
- phacovitrectomy surgery with silicone oil tamponade, phacovitrectomy surgery with gas tamponade, phacovitrectomy surgery with balanced saline solution tamponade
- Volunteers
- 100 people
- Sponsor
- Wenzhou Medical University
Vitreoretinal Surgeries, Local Anesthesia
Comparative Study Between Dexmedetomidine & Neostigmine as an Adjuvant to Local Anesthetic Mixture in Peribulbar Block in Vitreoretinal Surgeries
The majority of patients undergoing ophthalmic surgeries are elderly, with multiple chronic diseases, with increased risk of morbidity and mortality under general anesthesia.
- Trial name
- NCT06501352
- Testing
- Dexmedetomidine, Neostigmine, Saline
- Where
- Egypt
- Volunteers
- 81 people
- Sponsor
- Ain Shams University
Macular Pucker, Macular Hole
Brilliant Blue Versus Indocyanine Green
A study of non-inferiority design comparing brilliant blue and indocyanine green as intraoperative dye in macular pucker and macular hole.
- Conditions
- Macular Pucker, Macular Hole, Vitreoretinal Surgery
- Trial name
- NCT01083004
- Testing
- Indocyanine green, Brilliant blue arm
- Where
- Germany
- Volunteers
- 50 people
- Sponsor
- University of Cologne
Eye Injury Trauma
Adjunctive Steroid Combination in Ocular Trauma (ASCOT) Study
Eye trauma is a leading cause of blindness and visual impairment. Penetrating injuries of the eye are more likely to result in poor vision and the main cause of this is a scarring response on the retina (proliferative…
- Trial name
- ASCOT (NCT02873026)
- Testing
- Triamcinolone Acetonide
- Where
- United Kingdom
- Volunteers
- 300 people
- Sponsor
- Moorfields Eye Hospital NHS Foundation Trust
Analgesia
Peribulbar Block Versus Subtenon's Injection in Redo Vitreoretinal Surgery
To compare the efficacy and efficiency of peribulbar block versus sub-Tenon's capsule injection of local anesthetic in redo vitreoretinal surgery
- Trial name
- subtenon's (NCT04978415)
- Testing
- peribulbar block versus subtenon's block
- Where
- Egypt
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Abeer Samir Salem