Clinical trials: Surgical Errors
Cornea, Astigmatism
Multifocal-toric IOL Compared to Multifocal IOL Combined With Limbal Relaxing Incisions for Correction of Moderate Astigmatism During Cataract Surgery
The purpose of the present study is to compare the outcome of multifocal toric intraocular lens with standard multifocal lens plus incisional surgery in patients undergoing bilateral cataract surgery.
- Conditions
- Cornea, Astigmatism, Cataract
- Trial name
- NCT06277349
- Testing
- Toric multifocal IOL, Non-toric multifocal IOL
- Volunteers
- 30 people
- Sponsor
- Moorfields Eye Hospital NHS Foundation Trust
Cataract, Presbyopia
Non-comparative Study to Assess the Visual Performances and Safety of a Progressive Multifocal Intraocular Lens
This is an interventional, non-controlled, multicenter international trial with a prospective design on one cohort of patients.
- Trial name
- PSM15 (NCT02838004)
- Testing
- IOL MINI WELL READY
- Where
- Germany
- Volunteers
- 77 people
- Sponsor
- SIFI SpA
Cataract, Astigmatism
Refractive Accuracy of Toric Intraocular Lens Implantation Using Digital Marking Compared to Conventional Marking
To evaluate the postoperative refractive accuracy and intraoperative lens rotational placement of a conventional toric intraoperative marking method compared to digital marking.
- Trial name
- NCT07176897
- Testing
- Normal Toric IOL implantation with digital marking
- Where
- 2 sites in United States
- Volunteers
- 41 people
- Sponsor
- Colvard Kandavel Eye Center
Myopia, Keratoconus
Assessment of Corneal Biomechanical Properties Using Corvis ST and ECD Following LASIK, PRK, CXL, Veriflex IOL and Implantable Collamer Lens
To evaluate corneal biomechanical changes using the Corvis ST and ECD in patients who have under-gone LASIK, PRK, corneal cross-linking (CXL), Veriflex IOL and ICL.
- Conditions
- Myopia, Keratoconus, Refractive Surgery
- Trial name
- NCT06818461
- Testing
- Corvis St Before and after lasik, PRK, CXL, Veriflex IOL and ICL
- Where
- Egypt
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Beni-Suef University
Hyperopia
5 Year Follow up of SMILE® Procedure for the Correction of Hyperopia
The planned study will investigate and evaluate refractive stability, predictability, and safety in patients who underwent SMILE® pro surgery for hyperopia with or without astigmatism at least five years ago.
- Trial name
- PHOBOS-5FU (NCT07133737)
- Where
- 2 sites in Czechia, Germany
- Volunteers
- 100 people
- Sponsor
- Gemini Eye Clinic
Myopia, Hyperopia
Creating LASIK Flaps With the LenSx Femtosecond Laser
This will be a prospective, single-center clinical trial of up to 50 eyes of subjects scheduled to undergo LASIK surgery requiring an initial corneal flap. Subjects will be screened for eligibility.
- Trial name
- NCT01556893
- Testing
- LenSx Laser
- Where
- Hungary
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Alcon LenSx, Inc.
Astigmatism
Hydrophobic Acrylic Toric IOL Designed to Reduce the Effects of Preoperative Corneal Astigmatism
The investigational enVista IOL, Model MX60Tis equipped with toric optics and axis marks on the posterior surface to minimize the possibility of surgically induced astigmatism.
- Trial name
- NCT01852084
- Testing
- enVista® One-Piece Hydrophobic Acrylic Toric IOL, enVista control lens
- Where
- United States
- Volunteers
- 191 people
- Sponsor
- Bausch & Lomb Incorporated
Refractive Error
Evaluation of a Surgical Microscope Mounted Autorefractor When Used on Patients Lying in a Supine Position
The purpose of this study is to evaluate the accuracy and repeatability of an individually validated prototype autorefractor designed to be mounted on a surgical microscope.
- Trial name
- NCT01827748
- Testing
- Intraoperative Autorefractor IAR-1, Hartmann-Shack Auto Refractor
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Adventus Technology
Surgery, Myopia
Topo-guided LASIK and Photorefractive Keratectomy vs Wavefront LASIK and Photorefractive Keratectomy
This study evaluates the difference in results between eyes that have been treated wavefront optimized laser vision correction (either LASIK or Photorefractive Keratectomy) compared to eyes treated with topography-guided laser…
- Trial name
- NCT03075176
- Testing
- Wavefront optimized LASIK, Wavefront optimized Photorefractive Keratectomy, Topography-guided LASIK
- Where
- United States
- Volunteers
- 39 people
- Sponsor
- University of Utah
Morbid Obesity Requiring Bariatric Surgery, Neck Pain Musculoskeletal
Changes in Cervical Posture, Cervical Function, and Neck Pain After Sleeve Gastrectomy
Obesity may contribute to neck pain, altered cervical posture, and impaired cervical function through increased mechanical loading, changes in body alignment, and reduced muscle performance.
- Trial name
- NCT07813429
- Testing
- Laparoscopic Sleeve Gastrectomy
- Where
- Turkey (Türkiye)
- Volunteers
- 25 people
- Sponsor
- Haydarpasa Numune Training and Research Hospital
Surgical Errors
Modeling Technical Error and Adverse Outcomes
The investigators' objective was to develop a theoretical model exploring the relationship between technical errors and adverse patient outcomes.
- Trial name
- NCT04183439
- Volunteers
- 11 people
- Sponsor
- University of Missouri, Kansas City
Pediatric Cataract, IOL Implantation
Myopia Progression Control Using Atropine 0.05% After Pediatric Cataract Surgery And Intraocular Lens Implantation Surgery
Myopic shift remains a debilitating and unpredictable adverse event following pediatric cataract surgery. While research exploring peripheral myopic defocus for post-cataract surgery myopia prevention shows promising results, the…
- Conditions
- Pediatric Cataract, IOL Implantation, Myopia Progression
- Trial name
- NCT07364370
- Testing
- Atropine Eye drops
- Where
- Egypt
- Volunteers
- 50 people
- Sponsor
- Cairo University
Cataract, Astigmatism
Astigmatism Correction With Intrastromal Arcuate Incisions in Eyes Undergoing Cataract Surgery With Femtosecond Laser Using the Cassini Ambient With Iris Registration (ARCUATAS)
This is an observational, prospective follow-up post-marketing study of CE marked medical devices aimed at treating astigmatism in patients with cataracts.
- Trial name
- ARCUATAS (NCT05053620)
- Testing
- Calculation of the arcuate intrasomal incisions
- Where
- Spain
- Volunteers
- 22 people
- Sponsor
- OFTALVIST (Oftalmología Vistahermosa S.L)
Cataract Extraction
Microincision Versus Smallincision Combined Surgery
The purpose of this study is to compare refractive outcomes after two different types of combined cataract surgery, namely microinscision cataract surgery and smallincision cataract surgery, and sutureless 23-gauge vitrectomy in…
- Trial name
- NCT01198483
- Testing
- Combined Micro- Surgery, Combined Small-Surgery
- Where
- Austria
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- The Ludwig Boltzmann Institute of Retinology and Biomicroscopic Laser Surgery
Refractive Errors, Myopia
Safety and Suitability of ICL for Correction of Refractive Errors Without the Use of Dispersive OVDs
The goal of this observational study is to test whether surgeries for lenses designed to be implanted in the eye to correct refractive error can be done without the need for using viscoelastic substances that are used routinely…
- Conditions
- Refractive Errors, Myopia, Myopic Astigmatism, Hypermetropia
- Trial name
- NCT06371079
- Testing
- phakic intraocular lens implantation traditional, phakic intraocular lens implantation reduced OVD
- Where
- Iraq
- Volunteers
- 448 people
- Sponsor
- Loay Abdulmutalib Almusawi
Aphakia, Presbyopia
Post Market Clinical Evaluation of Clareon PanOptix Pro and Clareon PanOptix Pro Toric IOLs
The purpose of this study is to collect safety and performance data on two approved intraocular lenses (IOLs). This study will be conducted in participants who require cataract surgery in both eyes.
- Trial name
- NCT07161635
- Testing
- Clareon PanOptix Pro/Pro Toric Trifocal IOL, Phacoemulsification
- Where
- 5 sites in United States
- Volunteers
- 110 people
- Sponsor
- Alcon Research
Corneal Wavefront Aberration, Refractive Errors
Factors Influencing Subjective Visual Quality in Human Eyes
To assess subjective visual symptoms using the QoV questionnaire, measure pupil size using the Atongmu Pupillometer, measure wavefront aberrations using the OPD-Scan III Aberrometer, and measure/calculate the effective optical…
- Trial name
- NCT07518316
- Testing
- Corneal Refractive Surgery
- Volunteers
- 300 people
- Sponsor
- Tianjin Eye Hospital
Myopia, Cataract
Influence of Posterior Vitreous Detachment on Retinal Detachment After Lens Surgery in Myopic Eyes
Phacoemulsification with implantation of posterior chamber lenses represents the gold standard of care for patients needing lens surgery, but there is an increased risk of developing pseudophakic retinal detachment after surgery.
- Conditions
- Myopia, Cataract, Pseudophakic Retinal Detachment, Refractive Lens Exchange
- Trial name
- MYOPRED (NCT03152747)
- Where
- Austria
- Volunteers
- 609 people
- Sponsor
- Prim. Prof. Dr. Oliver Findl, MBA
Medical Errors : Wrong Site Surgery in Regional Anesthesia
E-learning to Prevent Wrong Site Surgery in Anesthesia
The purpose of this observational study is to assess the efficiency of an e-learning in order to put into practice some preventive measures to avoid wrong site surgery during anesthesia.
- Trial name
- ELPSite (NCT03232840)
- Where
- France
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University Hospital, Montpellier
Myopia
Corneal Topography Asymmetry Indices Changes After Corneal Refractive Surgery
To evaluate the changes that occur in the corneal indices after corneal refractive surgery either PRK or LASIK.
- Trial name
- NCT04589091
- Testing
- Refractive surgery
- Where
- Egypt
- Volunteers
- 30 people
- Sponsor
- Tanta University