Clinical trials: Surgical Errors
Astigmatism
Evaluation of Visual Acuity of the Envista One-piece Acrylic Toric IOL MX60ET
The primary objective of this study is to evaluate rotational stability and functional improvements in visual acuity of the enVista monofocal Toric IOL (MX60ET) following cataract surgery.
- Trial name
- NCT05739656
- Testing
- CATARACT SURGERY
- Where
- United States
- Volunteers
- 100 people
- Sponsor
- Bausch & Lomb Incorporated
Congenital Adrenal Hyperplasia
Surgical Evaluation of Using the Prepuce in Feminizing Genitoplasty
Background and Rationale: The vaginoplasty remains a challenge for the surgeon. The most commonly used techniques have been: the Y-V plasty described by fortunoff for low vagina, the pullthrough operation described by Hendren and…
- Trial name
- NCT03897504
- Testing
- feminizing genitoplasty using inner surface of the prepuce as pedicled tubularized flap
- Where
- Egypt
- Volunteers
- 5 people
- Sponsor
- Kasr El Aini Hospital
Anisometropic Amblyopia, Refractive Errors
Excimer Laser Surgery for Anisometropic Amblyopia
Study Objectives To compare the efficacy and safety of surgical treatment (PRK) versus non-surgical treatment of anisometropic amblyopia in children who have failed conventional treatment due to non-compliance or non-response.
- Trial name
- ATS19 (NCT03342235)
- Testing
- Photorefractive Keratectomy (PRK), Patching 2 hours per day, Excimer Laser System
- Sponsor
- Jaeb Center for Health Research
Glaucoma, Angle-Closure, Astigmatism
Prevalence of Corneal Astigmatism Before Glaucoma Surgery in Chinese Patients With Primary Angle-closure Glaucoma
Clear-lens extraction has been considered as first-line therapy for primary angle closure glaucoma(PACG) and application of toric intraocular lens (IOLs) leads to better postoperative visual acuity, yet little is known about the…
- Trial name
- NCT03159780
- Where
- China
- Volunteers
- 808 people
- Sponsor
- Mingkai Lin
Myopia
Efficacy and Safety of ReLEx Smile for Laser Correction of Myopia
Evaluation of the safety and efficacy of the Carl Zeiss Meditec VisuMax femtosecond laser for lamellar resection (ReLEx smile) in the reduction of myopia.
- Trial name
- NCT01481792
- Where
- Denmark
- Volunteers
- 125 people
- Sponsor
- University of Aarhus
Cataract, Refractive Errors
Comparison of Intraocular Lens Power Calculation Methods After Corneal Laser Refractive Surgery in Axial and Refractive Ammertropia
The study aims at determining the best biometry calculation formula to be used in IOL calculation of cataract patients how previously underwent laser refractive correction surgery
- Trial name
- NCT01979172
- Where
- Egypt
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- The National Eye Hospital, Cairo, Egypt
Myopia, Astigmatism
KLEx Versus FS-LASIK for the Treatment of Myopia and Compound Myopic Astigmatism
FemtoLASIK is a type of laser eye surgery used to correct vision problems such as nearsightedness, farsightedness, and astigmatism. It involves two main steps: creating a flap and reshaping the cornea.
- Conditions
- Myopia, Astigmatism, Myopic Astigmatism
- Trial name
- NCT06477081
- Testing
- FS-LASIK procedure, KLEx
- Where
- Mexico
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Instituto de Oftalmología Fundación Conde de Valenciana
Myopia
Study of the MEL 80 Excimer Laser Using LASIK in the Treatment of Moderate to High Myopia
The purpose of this study is to determine whether the MEL 80 Excimer Laser is effective in the treatment of moderate to high myopia (nearsightedness), when used as part of the Laser In Situ Keratomileusis (LASIK) procedure.
- Trial name
- NCT00762541
- Testing
- MEL 80 Treatment of High Myopia
- Where
- 5 sites in United States
- Volunteers
- 129 people, healthy volunteers welcome
- Sponsor
- Carl Zeiss Meditec, Inc.
Cataract, Presbyopia
Non-Inferiority Study Comparing MINI WELL READY® and FineVision® in Patients With Cataract Surgery
Interventional, Multicentre, controlled, randomized, single blind, twoarmed non-inferiority trial
- Trial name
- NCT03060954
- Testing
- MINI WELL READY ®, FINE VISION®
- Where
- 2 sites in France
- Volunteers
- 8 people
- Sponsor
- SIFI SpA
Corneal Endothelial Cell Loss, Cataract
Comparison of Phacoemulsification and Corneal Damage Between FLACS and Standard Phaco With Two Handpieces
The main goal of this study is to compare traditional cataract surgery with two new technologies: the femtosecond laser and the new Active Sentry handpiece.
- Conditions
- Corneal Endothelial Cell Loss, Cataract, Astigmatism
- Trial name
- NCT05119270
- Testing
- Femtosecond laser assisted cataract surgery with Active Sentry handpiece, Standard phacoemulsification with the Active Sentry handpiece, Standard phacoemulsification with the OZil handpiece
- Where
- Canada
- Sponsor
- Centre hospitalier de l'Université de Montréal (CHUM)
Refractive Errors, Refractive Surgery
Femto-flap Versus SBK Flap,Predictability and Variability
Laser Insitu keratomileusis (LASIK) has become the most popular procedure for refractive error correction. Lasik flap creation is the first and critical step during LASIK surgery because of its consensual effect on a residual…
- Trial name
- NCT04684888
- Testing
- Visumax Femto-flap, Sub Bowman's keratomileusis (SBK)-flap
- Where
- Iraq
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Suzan A Rattan
Ectasia
Intrastromal Corneal Ring for Ectasia After Refractive Surgery (Anel)
To evaluate the clinical outcomes of intrastromal corneal ring segment (ICRS) implantation to correct keratoconus on eyes with prior refractive surgery.
- Trial name
- NCT02008253
- Testing
- INTRASTROMAL CORNEAL RING SEGMENT
- Where
- Brazil
- Volunteers
- 29 people
- Sponsor
- Instituto de Olhos de Goiania
Refractive Surgery, Refractive Error - Myopia
Evaluate the Safety and Effectiveness of the AccuraSee™ IOPCL for Secondary Implantation in the Capsular Bag to Improve Near and/or Intermediate Vision Following Previous Cataract Surgery
This is a study to evaluate the safety and effectiveness of the AccuraSee™ intraocular pseudophakic capsular lens (IOPCL) to improve near and/or intermediate vision following previous cataract surgery.
- Trial name
- NCT06625749
- Testing
- Accurasee™ IOPCL
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- OnPoint Vision Inc
Cataract, Refractive Errors
Strengthening Community- to- Hospital Eye Care Pathways From Boko Eye Care Center in Rural Assam
This operational research project aims to strengthen continuity of eye care delivery between community screening and hospital-based treatment in rural Assam by redesigning referral pathways from the Boko Eye Care Center (ECC) to…
- Trial name
- NCT07333248
- Testing
- Experimental: Integrated Referral and Engagement Model
- Where
- India
- Volunteers
- 2,000 people
- Sponsor
- Seva Canada Society
Myopia, Myopia; Astigmatism
Assessment of IOP After Corneal Refractive Surgery Based on AI
Significance, Background, and Current Status Studies show the global average prevalence of myopia is 22%, with hyperopia incidence being similar.
- Conditions
- Myopia, Myopia; Astigmatism, Refractive Surgery, Intraocular Pressure Changes
- Trial name
- AIOP-CRS-AI (NCT07544615)
- Where
- China
- Volunteers
- 10,030 people, healthy volunteers welcome
- Sponsor
- Tianjin Eye Hospital
Postoperative Complication, Recovery, Physiological
Assessment of the Impact of Intestinal Gas Emission Quality on the Postoperative Course After Abdominal Surgery
The recovery of transit after surgery is an important parameter in postoperative evaluation. It generally reflects simple postoperative outcomes and allows the patient to return home.
- Trial name
- FLATQUAL (NCT06675097)
- Where
- 2 sites in France
- Volunteers
- 200 people
- Sponsor
- University Hospital, Angers
Myopia
Wavefront-guided vs. Topography-guided LASIK
The study is comparing outcomes of wavefront-guided LASIK to topography-guided LASIK in a randomized contralateral fellow eye study in myopic participants.
- Trial name
- NCT05588882
- Testing
- Wavefront-guided LASIK, Wavefront-guided
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Stanford University
Cataract Senile, Astigmatism
Accuracy of Topography Guided Automatic Marking of the Intraocular Lens (IOL) -Axis
In cataract surgery, the opaque lens is replaced by an artificial intraocular lens. The procedure also allows for correction of an refractive error such as myopia, hyperopia or astigmatism.
- Trial name
- NCT05750862
- Testing
- Marking of the intended axis of IOL-Implantation manually with an ink and marking device on the surface of the eye
- Where
- Switzerland
- Volunteers
- 30 people
- Sponsor
- Frank Bochmann
Myopia, High Myopia
Clinical Results of Small Incision Lenticule Extraction (SMILE) for the Correction of High Myopia
Small Incision Lenticule Extraction (SMILE) was introduced in 2011 using the VISUMAX femtosecond laser (Carl Zeiss Meditec, Jena, Germany). It is designed for correction of myopia and myopic astigmatism.
- Trial name
- NCT04110067
- Testing
- Small Incision Lenticule Extraction (SMILE) with Visumax (Carl Zeiss Meditec, Jena)
- Where
- Germany
- Volunteers
- 5,000 people, healthy volunteers welcome
- Sponsor
- Suphi Taneri
Cataract, Astigmatism
Assessment of Visual and Refractive Results and Rotational Stability of the TECNIS® Eyhance Toric II 1-piece Posterior Chamber Lens in Patients With Astigmatism Undergoing Cataract Surgery
Cataract surgery is one of the most common procedures performed worldwide. Astigmatism is the most common refractive disorder in adults, hence there is a high prevalence of preexisting astigmatism in cataract patients.
- Trial name
- STATE (NCT05144308)
- Testing
- Images of the operated eye (s)
- Where
- France
- Volunteers
- 13 people
- Sponsor
- Fondation Ophtalmologique Adolphe de Rothschild