Clinical trials: Error, Refractive
Presbyopia
Evaluate Efficacy and Safety of POS to Improve Distance-corrected Near Visual in Participants With Presbyopia
Safety and efficacy of POS in participants with presbyopia
- Trial name
- VEGA-3 (NCT06542497)
- Testing
- 0.75% phentolamine ophthalmic solution
- Where
- 39 sites in United States
- Volunteers
- 569 people, healthy volunteers welcome
- Sponsor
- Opus Genetics, Inc
Refractive Errors, Cycloplegic Refraction
ML Models Predicting Cycloplegic Refractive Error Based on Non-Cycloplegic Parameters in Myopic Adults
This study presents a machine learning model that predicts cycloplegic refraction in adults with myopia using standard non-cycloplegic eye measurements, aiming to reduce the need for cycloplegic drops while still identifying…
- Conditions
- Refractive Errors, Cycloplegic Refraction, Accommodation
- Trial name
- NCT07690813
- Testing
- Machine learning model for predicting cycloplegic refraction
- Where
- China
- Volunteers
- 2,500 people
- Sponsor
- Second Affiliated Hospital of Nanchang University
Myopia, Refractive Errors
Efficacy of Repeated Low-Level Red-Light Therapy in Myopia Control
The purpose of this study is to determine if repeated low-level red-light therapy can slow myopia progression in Chinese schoolchildren.
- Conditions
- Myopia, Refractive Errors, Eye Diseases
- Trial name
- NCT04073238
- Testing
- Low-level Red-light Therapy
- Where
- 4 sites in China
- Volunteers
- 264 people
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Presbyopia, Low Vision
Development and Validation of a Digital Optotype for Near Vision in Greek Language.
Primary objective of our study is to develop and validate a computer-based digital near-vision optotype based on the Greek version of the print MNREAD.
- Conditions
- Presbyopia, Low Vision, Near Vision
- Trial name
- DeDART (NCT04242836)
- Testing
- MNREAD testing
- Where
- Greece
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Democritus University of Thrace
Blindness, Cataract
Prevalence of Blindness, Visual Impairment in Chao Nan Area, China
This study will provide a profile of blindness/visual impairment, avoidable blindness and cataract surgery service in Chaonan, mainland China.
- Conditions
- Blindness, Cataract, Visual Impairment, Refractive Errors
- Trial name
- NCT04143334
- Testing
- Conventional survey
- Volunteers
- 3,700 people
- Sponsor
- Chinese University of Hong Kong
Myopia
Evaluation of Stenfilcon A Versus Etafilcon A
Evaluation of two contact lenses
- Trial name
- NCT01809834
- Testing
- Etafilcon A, Stenfilcon A
- Where
- Canada
- Volunteers
- 46 people
- Sponsor
- CooperVision, Inc.
Myopia
Clinical Evaluation of a Silicone Hydrogel Lens
The purpose of this study is to assess the performance of an investigational contact lens among contact lens wearers.
- Trial name
- NCT01016132
- Testing
- lotrafilcon A contact lens
- Volunteers
- 152 people
- Sponsor
- CIBA VISION
Myopia, Progressive
Crossover RCT of TAMER Lenses in Myopia Control
This study is a prospective, randomized, crossover clinical trial with a planned proposed enrollment of 120 Chinese male and female subjects aged 6-12 years without systemic or ocular diseases to follow up their cycloplegic…
- Trial name
- NCT06329986
- Testing
- TAMER Lens Spectacle, SV lenses
- Where
- China
- Volunteers
- 120 people
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Cataract, Presbyopia
Prospective Clinical Trial of Unilateral or Bilateral Implantation of TecnisSymfony IOL in Cataract Patients With Presbyopia
This is to evaluate the satisfaction of patient and physician about short-distance, medium-distance, long-distance postoperative vision and eyeglass dependence, glare, and visual acuity after insertion of the TECNIS® Symfony or…
- Trial name
- NCT03501654
- Testing
- TecnisSymfony®
- Where
- South Korea
- Volunteers
- 20 people
- Sponsor
- Seoul National University Hospital
Macula Hole, Retinal Detachment
Amniotic Membrane for Recurrent Macular Hole
Macular hole surgery were tried by different surgeons using many techniques with different successes but still there were many recurrences.
- Conditions
- Macula Hole, Retinal Detachment, Myopic Macular Degeneration
- Trial name
- NCT03528122
- Testing
- Recurrent opened macular hole
- Where
- Egypt
- Volunteers
- 20 people
- Sponsor
- Minia University
Myopia
The Effect of Blue-light Filtering Spectacle Lenses on Myopia Progression in Schoolchildren
The purpose of this study is to investigate if the blue-light filtering spectacle lenses promote myopia progression in schoolchildren.
- Trial name
- NCT03538002
- Testing
- Blue-light filtering spectacle lenses
- Where
- Hong Kong
- Volunteers
- 148 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Myopia
Comparative Clinical Evaluation of Daily Disposable Lenses in Symptomatic Daily Disposable Lens Wearers
The purpose of this study is to evaluate the extent to which symptoms improve in symptomatic contact lens wearers when fit with one of two different daily disposable contact lenses.
- Trial name
- NCT01035905
- Testing
- Nelfilcon A contact lens, Narafilcon A contact lens
- Volunteers
- 63 people
- Sponsor
- CIBA VISION
Cataract, Presbyopia
A Clinical Evaluation of the LensGen Intraocular Lens
A multi-center, open-label, non-comparative clinical trial to assess the safety and efficacy of the LensGen IOL (Juvene IOL) for the treatment of aphakia and presbyopia after removal of the natural crystalline lens due to…
- Trial name
- Grail (NCT05364658)
- Testing
- Juvene IOL
- Where
- 2 sites in Mexico
- Volunteers
- 61 people, healthy volunteers welcome
- Sponsor
- LensGen, Inc.
Refractive Error
On-Eye Evaluation of Contact Lens Rotation Marks
The purpose of this study was to select the size of the molded rotation mark for a new toric contact lens by comparing the visibility of various molded rotation marks.
- Trial name
- NCT02055404
- Testing
- Delefilcon A spherical contact lens with molded marks, Etafilcon A toric contact lens
- Volunteers
- 3 people, healthy volunteers welcome
- Sponsor
- Alcon Research
Myopia
Potentiating Rural Investment in Children's Eyecare (PRICE)
The aim of the project is to create, study and advocate for a model that can be adopted by the Chinese government to provide spectacles for all children sustainable.
- Trial name
- PRICE (NCT02231606)
- Testing
- Free Glasses, Upgrade Glasses 1, Upgrade Glasses 2
- Where
- China
- Volunteers
- 10,234 people
- Sponsor
- Sun Yat-sen University
Myopia, Hyperopia
Clinical Evaluation of Two Frequent Replacement Soft Spherical Contact Lenses
This was a single-blind (participant masked), interventional, prospective, direct refit, bilateral wear short-term fitting study.
- Trial name
- NCT05656885
- Testing
- Lens A, Lens B
- Where
- Spain
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Myopia
Effect of Orthokeratology Versus Spectacles on Myopia Progression in Chinese Children: A Crossover Trial
Orthokeratology is becoming popular for the treatment of myopia children. Many studies have shown that orthokeratology is effective in temporarily reducing refractive error, and is also helpful for controlling myopia progression.
- Trial name
- NCT02186184
- Testing
- Orthokeratology, Spectacle
- Where
- China
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Beijing Tongren Hospital
Refractive Error
Comparison of Lotrafilcon B Lenses With Different Packaging Solutions
The purpose of this study is to evaluate AIR OPTIX® plus HYDRAGLYDE® (AOHG) contact lenses compared to AIR OPTIX® AQUA (AOA) contact lenses in overall lens fit.
- Trial name
- NCT02699684
- Testing
- Lotrafilcon B contact lenses with EOBO-41, Lotrafilcon B contact lenses, Hydrogen peroxide-based lens care solution
- Volunteers
- 82 people
- Sponsor
- Alcon Research
Presbyopia
Performance of Two Daily Disposable Multifocal Contact Lenses
This study will compare the performance of two daily disposable multifocal soft contact lenses.
- Trial name
- NCT07444658
- Testing
- Lens A (kalfilcon A), Lens B (stenfilcon A)
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- CooperVision International Limited (CVIL)
Bilateral Refractive Amblyopia
Bilateral Refractive Amblyopia Treatment Study
The purpose of this study will be to: Determine the amount of visual acuity improvement with treatment of presumed bilateral refractive amblyopia Determine the time course of visual acuity improvement with treatment
- Trial name
- ATS7 (NCT00305955)
- Testing
- Spectacles
- Where
- United States
- Volunteers
- 113 people
- Sponsor
- Jaeb Center for Health Research
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