Clinical trials: Surgical Errors
Astigmatism
Arcuate Incisions With Light Adjustable Lens for Astigmatism Correction in Lens Surgery
This study aims to evaluate the safety and effectiveness of femtosecond laser arcuate corneal relaxing incisions (AK) combined with Light Adjustable Lens (LAL) implantation for correcting pre-existing corneal astigmatism in…
- Trial name
- NCT07140653
- Testing
- Femto arcs, Light Adjustable Lens (LAL)
- Where
- 2 sites in United States
- Volunteers
- 60 people
- Sponsor
- Center For Sight
Aphakia, Presbyopia
Contralateral Claims Study of Clareon Vivity Pro
The purpose of this study is to test new versions of Clareon Vivity Pro intraocular lenses (IOLs) by comparing them to currently marketed IOLs.
- Trial name
- NCT07484191
- Testing
- Clareon Vivity Pro IOL, Clareon Vivity IOL, TECNIS PureSee IOL
- Where
- 7 sites in Australia
- Volunteers
- 165 people
- Sponsor
- Alcon Research
Presbyopia, Refractive Error
Comparison of PRESBYOND Laser Blended Vision and Conventional Monovision LASIK in Individuals With Presbyopia: A Randomized Clinical Study
The goal of this clinical trial is to learn if laser blended vision (LBV) works better than traditional monovision LASIK to correct presbyopia in adults aged 40 to 55 years.
- Trial name
- NCT07512089
- Testing
- Laser Blended Vision LASIK, Traditional Monovision LASIK
- Where
- China
- Volunteers
- 100 people
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Pseudophakia, Accomodation
Monofocal Extended Range of Vision (MERoV) Study
The investigators are proposing this research project to: 1. Screen a set of patients after normal cataract surgery with a single focus lens aimed at good distance vision at 3 months after surgery to identify patients who are…
- Conditions
- Pseudophakia, Accomodation, Aberration, Corneal Wavefront
- Trial name
- MERoV (NCT04011696)
- Where
- United Kingdom
- Volunteers
- 412 people
- Sponsor
- Brighton and Sussex University Hospitals NHS Trust
Cataract, Presbyopia
MULTICENTER, DOUBLE-ARM, PATIENT AND ASSESSOR-MASKED, PROSPECTIVE, RANDOMIZED CLINICAL TRIAL TO COMPARE VISUAL PERFORMANCE OF NEGATIVE AND NEUTRAL ASPHERIC MONOFOCAL INTRAOCULAR LENSES
The purpose of this study is to compare the binocular distance, intermediate, and near visual acuity and patient reported outcomes of the Johnson \&Johnson Eyhance and Bausch \& Lomb enVista IOLs.
- Trial name
- NCT07385014
- Testing
- Neutral Aspheric Monofocal IOL, Negative Aspheric Monofocal IOL
- Where
- United States
- Volunteers
- 80 people
- Sponsor
- Milton S. Hershey Medical Center
Glaucoma, Ocular Hypertension
Surgical and Refractive Outcomes of Combined Glaucoma Surgery
The aim of the study is to examine surgical and refractive outcomes of glaucoma combined surgery in six months period of follow up
- Conditions
- Glaucoma, Ocular Hypertension, Filtering Surgery
- Trial name
- NCT04335825
- Testing
- phacotrabeculectomy, ExPress antiglaucoma surgery combined with phacoemulsification
- Volunteers
- 81 people
- Sponsor
- Medical University of Bialystok
Ophthalmology
Optimizing the Ocular Surface With Systane COMPLETE Pre- and Post-operatively in Patients With Dry Eye Planning for Cataract Surgery: An Extension Study of Optimizing the Ocular Surface With Systane COMPLETE in Patients With Dry Eye Planning for Cataract Surgery
Compare the corneal astigmatism data before and after the use of Systane COMPLETE to evaluate its impact on predicting changes in postoperative residual astigmatism, as well as the effects of using or not using Systane COMPLETE…
- Trial name
- NCT06886373
- Testing
- Systane Complete
- Where
- Taiwan
- Volunteers
- 140 people
- Sponsor
- National Taiwan University Hospital
Cataract
Clinical Outcomes of Patients Bilaterally Implanted With the TECNIS® Symfony or TECNIS® Symfony Toric Extended Range of Vision IOL
In With increased patients' demand for a spectacle-free lifestyle and technological advancements, cataract surgery with multifocal intraocular lens (IOL) implantation has become an effective solution for correcting presbyopia in…
- Trial name
- NCT03997890
- Testing
- Cataract surgery with binocular implantation of either Symfony (ZXR00) or Symfony toric (ZXT) IOLs
- Where
- South Korea
- Volunteers
- 96 people
- Sponsor
- Yonsei University
Refractive Error, Presbyopia
Peripheral PresbyLASIK Using the Allegretto Wavelight System For The Treatment of Presbyopia
The aim of this study is to analyze the results of PresbyLASIK performed using the wavefront-optimized LASIK for the treatment of presbyopia on low hyperopic and low myopic patients with astigmatism.
- Trial name
- NCT01059006
- Testing
- PresbyLASIK
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of California, San Diego
Myopia, Astigmatism
SMILE (Small Incision Lenticule Extraction) in the DoD (Department of Defense)
The Use of the VisuMaxTM Femtosecond Laser Small-Incision Lenticule Extraction (SMILE) Procedure for the Correction of Myopia with or without Astigmatism study is a prospective, non-randomized, multicenter clinical study that…
- Trial name
- NCT04072289
- Testing
- Visumax spherocylindrical treatment
- Where
- United States
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- United States Naval Medical Center, San Diego
Cataract, Refractive Surgery
Refractive Change Induced by 2.8-mm Corneal Incision
The investigators' purpose is to study the induced refractive change caused by different 2.8-mm corneal incision locations in phacoemulsification, because the investigators hypothesize that the effect may be different for nasal…
- Conditions
- Cataract, Refractive Surgery, Astigmatism
- Trial name
- CINPHA (NCT00742950)
- Testing
- Nasal 2.8-mm corneal incision, Temporal 2.8-mm corneal incision, Superior 2.8-mm incision
- Where
- Spain
- Volunteers
- 108 people
- Sponsor
- Hospital Universitario Ramon y Cajal
Breast Cancer Female
Validation of Prone Crawl Radiotherapy for Whole-breast Irradiation After Breast Conserving Surgery
The aim of this study is to validate the obtained results of setup precision, comfort and setup time. The possibility of using breath hold for heart sparing in combination with prone crawl position will be tested.
- Trial name
- NCT05179161
- Testing
- Prone crawl positioning
- Volunteers
- 40 people
- Sponsor
- University Hospital, Ghent
Refractive Errors, Satisfaction
PRO Measure for Refractive Surgery IRAS Project Number 246072
The development and validation of a concise, practical, on-line, self-administered, self-archiving, and self-scoring PRO questionnaire for routine clinical use in refractive surgery is the primary study objective.
- Conditions
- Refractive Errors, Satisfaction, Cornea, Lens Diseases
- Trial name
- NCT03655743
- Testing
- LASIK, PRK, Phacoemulsification
- Where
- United Kingdom
- Volunteers
- 372 people
- Sponsor
- Moorfields Eye Hospital NHS Foundation Trust
Hand Hygiene, Surgical Wound Infection
Surgical Handwashing: Drying With One or Two Surgical Towels
This study aims to determine whether the use of two sterile towels for drying after surgical handwashing results in fewer contamination events compared to the use of only one towel among healthcare personnel.
- Conditions
- Hand Hygiene, Surgical Wound Infection, Healthcare Associated Infection, Medical Errors
- Trial name
- NCT06420934
- Testing
- Drying procedure after surgical handwashing
- Where
- Colombia
- Volunteers
- 72 people, healthy volunteers welcome
- Sponsor
- Instituto de Ortopedia Infantil Roosevelt
Cataract, Presbyopia
Multifocal Intraocular Lens x Monovision x Hybrid Monovision After Bilateral Cataract Surgery
To compare refractive outcomes and patient's visual quality after bilateral cataract surgery when implanting multifocal intraocular lens, monofocal with monovision or hybrid monovision.
- Trial name
- NCT02595177
- Testing
- Cataract surgery with intraocular lens implantation.
- Where
- Brazil
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Federal University of São Paulo
Refractive Errors, Myopic Astigmatism
Evaluation of Different Lenticule Diameters in Myopic Astigmatism Correction With SMILE Procedures
Small incision lenticule extraction (SMILE) is a refractive intrastromal procedure for myopia and myopic astigmatism correction.
- Trial name
- NCT06062004
- Testing
- Small Incision Lenticule Extraction (SMILE)
- Where
- Egypt
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Al Watany Eye Hospital
Abdominal Massage, Enteral Nutrition
Effect of Abdominal Massage on Gastrointestinal Symptoms After Head and Neck Cancer Surgery
This study aimed to evaluate whether abdominal massage could reduce abdominal pain, constipation, and gas/bloating in patients receiving enteral nutrition through a nasogastric tube after surgery for head and neck cancer.
- Conditions
- Abdominal Massage, Enteral Nutrition, Nasogastric Feeding, Head and Neck Surgery
- Trial name
- HNC-AM (NCT07889011)
- Testing
- Abdominal Massage
- Where
- Turkey (Türkiye)
- Volunteers
- 70 people
- Sponsor
- Maltepe University
Myopia
Comparison of Myopic Small Incision Lenticule Extraction (SMILE) With VISUMAX 500 Versus VISUMAX 800 Platforms
Small incision lenticule extraction (SMILE) procedure is a well-known procedure for the correction of myopia. The purpose of this research study is to compare the two SMILE procedures with different laser platforms (VISUMAX 500…
- Trial name
- NCT07505264
- Testing
- SMILE surgery with Visumax 500, SMILE surgery with Visumax 800
- Where
- Singapore
- Volunteers
- 100 people
- Sponsor
- Singapore Eye Research Institute
Mixed Astigmatism
Study of the MEL 80 Excimer Laser Using LASIK in the Treatment of Mixed Astigmatism
The purpose of this study is to determine whether the MEL 80 Excimer Laser is effective in the treatment of mixed astigmatism up to 6.0 D, when used as part of the Laser In Situ Keratomileusis (LASIK) procedure.
- Trial name
- NCT00761826
- Testing
- MEL 80 Mixed Astigmatism Treatment
- Where
- 5 sites in United States
- Volunteers
- 126 people, healthy volunteers welcome
- Sponsor
- Carl Zeiss Meditec, Inc.
Endometriosis Related Infertility
Surgery Before Embryo Transfer in ERROR (Endometrioma Related Reduction in Ovarian Reserve)
This prospective study evaluates the pregnancy results after laparoscopic endometriosis operation in infertile patients with ERROR (endometrioma related reduction in ovarian reserve)
- Trial name
- NCT04233983
- Testing
- Laparoscopic Endometriosis Surgery
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people
- Sponsor
- Uludag University