Clinical trials: Surgical Errors
Retinal Detachment
Correlation of Metamorphopsia and Aniseikonia to Retinal Shift Following Retinal Detachment Surgery
Individuals operated for rhegmatogenous retinal detachment will be prospectively evaluated for postoperative retinal shift. Fundus autofluorescence will be used to evaluate retinal shift that will be correlated to visual acuity…
- Trial name
- NCT03187613
- Where
- Norway
- Volunteers
- 38 people
- Sponsor
- Helse Stavanger HF
Cataract, Presbyopia
Comparative Analysis of the Visual Performance and Patient Satisfaction After Cataract Surgery With Implantation of a Medicontur Monofocal (877PAY) or a Medicontur Extended Depth of Focus (877PEY) IOL
The purpose of this multi-center, prospective, randomized, comparative clinical investigation was to evaluate and compare the visual performance at far, intermediate and near distances, the presence of photopic phenomena and…
- Conditions
- Cataract, Presbyopia, Ametropia
- Trial name
- NCT06642779
- Testing
- VFQ- 25 (Visual Function Questionnaire), Optical Biometry, Slit lamps / Fundoscopy / Biomicroscopy
- Where
- 3 sites in Hungary
- Volunteers
- 64 people
- Sponsor
- Medicontur Medical Engineering Ltd
Refractive Error
Epithelial Healing and Visual Outcomes Using Omega-3 Therapy Before and After Photorefractive Keratectomy (PRK) Surgery
The purpose of this study is to demonstrate that omega-3 supplement can be use as an adjunct therapy for PRK patients. The investigators believe that omega-3 supplement will reduce the size of persistent epithelial defects (PEDS)…
- Trial name
- Omega-3 (NCT01059019)
- Testing
- Omega-3 Fatty Acid Supplements
- Where
- United States
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- University of California, San Diego
Myopia, Refractive Ametropia
Comparison of Two Rotational Alignment Methods for Astigmatism Correction in SMILE Surgery
Small incision lenticule extraction (SMILE) is a commonly used corneal refractive procedure for correcting myopia and myopic astigmatism.
- Trial name
- NCT07696468
- Testing
- Device-assisted cyclotorsion control during SMILE, Manual limbal marking-guided cyclotorsion adjustment during SMILE
- Where
- China
- Volunteers
- 52 people
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Myopia
A Prospective Evaluation of Contrast Sensitivity and Disability Glare in Refractive Surgery, a Sub-Study of: Initial Evaluation of Excimer Laser Keratorefractive Surgery in U.S. Army Personnel (WU # 2335-99)
The purpose of this study is to conduct a prospective assessment of small target contrast sensitivity and disability glare in refractive surgery.
- Trial name
- NCT00413868
- Testing
- LASIK, PRK, Small target contrast sensitivity and disability glare
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Walter Reed Army Medical Center
Astigmatism
Rotational Stability After Nanoflex Collamer Toric Intraocular Lens Implantation in Astigmatic Patients
This study aims to assess the rotational stability of the new collameric Nanoflex toric intraocular lens (T-IOL) by STAAR inserted in astigmatic patients after cataract surgery.
- Trial name
- T-IOL (NCT02412215)
- Testing
- Phacoemulsification with toric Nanoflex IOL implantation, NanoFlex toric Intraocular Lens
- Where
- Italy
- Volunteers
- 60 people
- Sponsor
- University of Turin, Italy
Adrenal Tumor, Adrenal Disease
Surgical Treatment of Adrenal Diseases- Laparoscopic vs. Robotic-assisted Adrenalectomy
The goal of this multicenter, observational, analytic, randomized clinical trial is to analyze the laparoscopic and robot-assisted method in the surgical treatment of patients with adrenal diseases.
- Conditions
- Adrenal Tumor, Adrenal Disease, Adrenal Mass, Adrenalectomy; Status
- Trial name
- NCT06050057
- Where
- Czechia
- Volunteers
- 100 people
- Sponsor
- University Hospital Olomouc
Refractive Disorders
Visual and Optics Impact of Refractive Surgery
Refractive surgery includes interventions to correct refractive errors, using a medical device such as a laser or an implant (intraocular lenses) or surgical instruments.
- Trial name
- CRIVO (NCT02889588)
- Where
- France
- Volunteers
- 60 people
- Sponsor
- Fondation Ophtalmologique Adolphe de Rothschild
Cataract, Refractive Error
A Study of Interventions to Reduce Disability From Visual Loss in Nursing Home Residents
The purpose of this clinical trial is to determine if interventions within the nursing home to restore vision, or cope with visual loss, in residents with visual impairment result in improvement or less decline in mobility…
- Conditions
- Cataract, Refractive Error, Low Vision
- Trial name
- NCT00348621
- Testing
- Visual impairment intervention program
- Where
- United States
- Volunteers
- 2,544 people
- Sponsor
- Johns Hopkins University
Myopia, Myopic Astigmatism
Machine Learning Prediction of 1-Year Refractive Error After SMILE
This retrospective single-center observational study is designed to develop and internally validate a multi-output machine learning model for predicting 1-year postoperative refractive prediction error after small incision…
- Conditions
- Myopia, Myopic Astigmatism, Refractive Error - Myopia Axial
- Trial name
- SMILE (NCT07478419)
- Where
- China
- Volunteers
- 1,100 people
- Sponsor
- Tongji University
Astigmatism, Cataract
Limbal Relaxing Incision Versus Toric Intraocular Lens for Corneal Astigmatism During Cataract Surgery.
This study will compare toric intra-ocular lens (IOL) with limbal relaxing incisions (LRI) in correcting astigmatism in patient undergoing standard cataract surgery.
- Trial name
- NCT02067429
- Testing
- Limbal Relaxing Incisions, Toric Intraocular Lens
- Where
- United Kingdom
- Volunteers
- 80 people
- Sponsor
- Christin Henein
Blepharoptosis
Astigmatic Changes Secondary to Eyelid Surgeries
Eyelid surgeries change the lid position over the cornea. Previous surgeries evaluated astigmatic corneal changes in children undergoing ptosis repair.
- Trial name
- NCT01968174
- Where
- 3 sites in Israel
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Meir Medical Center
Colorectal Carcinoma (CRC), Right Hemicolectomy
The Intraoperative Technical Errors of Robotic vs. Laparoscopic Radical Right Hemiclectomy
Experimental design: This study is a multicenter, prospective, randomized, controlled phase III clinical trial that identifies, classifies, defines, and quantitatively analyzes technical errors between robotic and laparoscopic…
- Trial name
- NCT07138859
- Testing
- Robot assisted radical right hemicolectomy (D3 lymph node dissection), Laparoscopic assisted radical right hemicolectomy (D3 lymph node dissection)
- Where
- China
- Volunteers
- 368 people
- Sponsor
- The Affiliated Hospital of Qingdao University
Cataract, Corneal Astigmatism
Evaluation of the Impact of Corneal Width on Surgically Induced Astigmatism (SIA) and Functional Results After Bimanual 1.4 mm Microincision Cataract Surgery (B-MICS), Coaxial 1.8 mm MICS (C-MICS) and 2.4 mm Small Incision Cataract Surgery (C-SICS).
The aim of the study is to compare functional results and complications of 3 methods of cataract phacoemulsification: bimanual 1.4 mm cataract surgery (B-MICS), coaxial 1.8 mm cataract surgery (C-MICS) and coaxial 2.4 mm small…
- Conditions
- Cataract, Corneal Astigmatism, Corneal Incision Contracture
- Trial name
- MICS (NCT05510869)
- Testing
- Bimanual 1.4 mm microincision cataract surgery (B-MICS) with IOL implantation in a "wound-assisted" technique. In bimanual MICS group a self-sealing 1.4 mm wide incision was created supratemporally, Coaxial 1.8 mm microincision cataract surgery (C-MICS) with IOL implantation with an injector through the 1.8 mm wide incision created temporally., Coaxial 2.4 mm small incision cataract surgery (C-SICS) with IOL implantation with an injector through the 2.4 mm wide incision located temporally.
- Volunteers
- 90 people
- Sponsor
- Medical University of Lodz
Cataract, Astigmatism
Toric Intraocular Lens Following Cataract Surgery
The objective of this clinical trial is to evaluate the safety and effectiveness of the Bausch + Lomb Toric Accommodating Posterior Chamber Silicone Intraocular Lens used to provide near, intermediate, and distance vision and a…
- Trial name
- NCT01140477
- Testing
- Toric Accommodating Lens, Accommodating Lens
- Where
- United States
- Volunteers
- 229 people
- Sponsor
- Bausch & Lomb Incorporated
Hyperopia
Photorefractive Keratectomy (PRK) for Hyperopia After Radial Keratotomy
To assess the efficacy, predictability, stability and safety of corneal wavefront-guided photorefractive keratectomy (PRK) for correcting hyperopia and astigmatism after radial keratotomy (RK).
- Trial name
- NCT00917657
- Testing
- Photorefractive keratectomy
- Volunteers
- 36 people
- Sponsor
- University of Sao Paulo
Medical Education, Patient Safety
Digital Microlearning for Patient-Safety Readiness in Nursing Students
This randomized controlled trial evaluated whether a seven-day, patient-safety-focused digital microlearning program improved sustained clinical error recognition and the transfer of safety learning among second-year nursing…
- Conditions
- Medical Education, Patient Safety, Nursing Education
- Trial name
- DigiM-2026 (NCT07367906)
- Testing
- Digital Microlearning Program on Patient Safety
- Where
- Turkey (Türkiye)
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Agri Ibrahim Cecen University
Corneal Astigmatism
Prospective Evaluation of Limbal Relaxing Incision (LRI) in Conjunction With Phacoemulsification Surgery for Astigmatic Correction in Chinese Eyes
The main purpose of this study is to evaluate the use of limbal relaxing incision (LRI) for astigmatic correction. LRI is a procedure where a pair of incisions is made in the peripheral part of the cornea so as to alter its shape…
- Trial name
- NCT01122992
- Testing
- Limbal relaxing incision
- Where
- Singapore
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Singapore National Eye Centre
Aphakia, Astigmatism
Post Market Clinical Follow-up (PMCF) Study of Clareon Vivity & Clareon PanOptix
The purpose of this Post-Market Clinical Follow-up study is to describe the long-term safety and performance of the Clareon Vivity and Vivity Toric and Clareon PanOptix and PanOptix Toric IOLs.
- Conditions
- Aphakia, Astigmatism, Presbyopia
- Trial name
- NCT05796453
- Testing
- Clareon Vivity IOL - Non Toric, Clareon Vivity IOL - Toric, Clareon PanOptix Trifocal IOL - Non Toric
- Where
- 7 sites in United States, Puerto Rico
- Volunteers
- 470 people
- Sponsor
- Alcon Research
Cataract, Presbyopia
The Visual Performances of a Progressive Multifocal Intraocular Lens With Extended Depth of Focus
The purpose of this observational, non-controlled, multicenter trial with a retrospective design is to evaluate the visual performance of one cohort of patients who received the EDOF MINI WELL® intraocular lenses following…
- Trial name
- NCT02740010
- Testing
- EDOF Mini WELL Ready IOL
- Where
- Italy
- Volunteers
- 100 people
- Sponsor
- SIFI SpA