Clinical trials: Refractive Disorders
Myopia, Ametropia
LED Low-Intensity Red Light for Myopia Control in Youth: Efficacy and Safety Study
The purpose of this clinical trial was to investigate the efficacy and safety of repetitive low-intensity single-wavelength red light from an LED light source in controlling myopia progression in children and adolescents.
- Trial name
- NCT07375589
- Testing
- Red light treatment with 1.6mW LED light source, Red light treatment with 0.001mW LED light source
- Where
- China
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia Progression, Myopia
Inhibition of Myopia Progression With Optical Devices
This observational study aims to determine whether optical devices designed to slow myopia progression and/or environmental factors can prevent myopia progression in the pediatric and adolescent myopic population.
- Conditions
- Myopia Progression, Myopia, Myopia, Child Myopia Progression
- Trial name
- NCT07698977
- Testing
- Wearing myopia-control D.I.M.S. glasses while awake, DIMS (Defocus Incorporated Multiple Segments) lenses
- Where
- Hungary
- Volunteers
- 50 people
- Sponsor
- Semmelweis University
Keratoconus, Ectasia
Safety and Effectiveness of Corneal Crosslinking (CXL): Keratoconus and Post-Refractive Ectasia
This prospective, randomized study is being conducted to evaluate the safety and effectiveness of corneal cross-linking (CXL) in patients with keratoconus or post-refractive ectasia (post-LASIK or PRK) utilizing two techniques…
- Trial name
- CXL (NCT03080077)
- Testing
- Ricrolin+, Epi-Off
- Where
- United States
- Volunteers
- 8 people
- Sponsor
- Icahn School of Medicine at Mount Sinai
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
Myopia
Guangzhou Outdoor Activity Longitudinal Study
The purpose of this study is to assess whether outdoor activities are effective in preventing the development and progression of juvenile-onset myopia in Chinese children.
- Trial name
- NCT00848900
- Testing
- Outdoor activity
- Where
- China
- Volunteers
- 2,000 people
- Sponsor
- Sun Yat-sen University
Amblyopia, Myopia
Performance of a Photoscreener for Vision Screening in a Haitian Pediatric Population
Screening of haitian children between the ages of 3 and 6 years old for amblyogenic risk factors with the use of the Spot photoscreener. The photoscreener results will be compared to the complete ophthalmologic evaluation.
- Conditions
- Amblyopia, Myopia, Hyperopia, Astigmatism
- Trial name
- POPH (NCT02655432)
- Testing
- Spot photoscreener, Ophthalmologic evaluation, Cyclopleged refraction
- Where
- 3 sites in Haiti
- Volunteers
- healthy volunteers welcome
- Sponsor
- Université de Montréal
Myopia
Pilot Study of Accommodative/Vergence Therapy to Modify Accommodative Function in Children With Myopia
This study aims to determine the treatment effect of accommodative/vergence therapy on myopic children by assessment of accommodative function before and after therapy.
- Trial name
- ACC (NCT02578407)
- Testing
- accommodative/vergence therapy
- Where
- China
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Sun Yat-sen University
Myopia
Phase 1 Study of SHJ002 Sterile Ophthalmic Solution in Pediatric Subjects
This is a single-center, open-label, first-in-human dose-escalation study of SHJ002 Ophthalmic Solution in children. (Part 1) Three (3) subjects will receive each concentration of SHJ002 for 3 days in an escalation design in one…
- Trial name
- NCT04928144
- Testing
- SHJ - Low concentration, SHJ - Mid concentration, SHJ - High concentration
- Where
- Taiwan
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Sunhawk Vision Biotech, Inc.
Accomodation, Refractive Errors
Study on the Effect of Two Ways of Cycloplegia on Biological Parameters of Ciliary Muscle
Atropine has a ciliary muscle-paralysing effect and causes hyperopic drift. Besides, atropine has been proven to slow the progression of myopia. Many studies have suggested that atropine can increase the thickness of the choroid.
- Conditions
- Accomodation, Refractive Errors, Myopia, Cycloplegia
- Trial name
- NCT05449015
- Testing
- 1% atropine
- Where
- China
- Volunteers
- 144 people
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia, Cost-effectiveness Analysis
Comparing Myopia Treatments in Youth: Defocus Spectacles, Glasses, and Ortho-K
The research project titled "A Comparative Study on the Clinical Efficacy, Quality of Life, and Cost of Use of Peripheral Defocus Spectacles, Frame Glasses, and Orthokeratology Lenses in Myopic Children and Adolescents" aims to…
- Conditions
- Myopia, Cost-effectiveness Analysis, Quality of Life
- Trial name
- NCT06278974
- Where
- China
- Volunteers
- 90 people
- Sponsor
- He Eye Hospital
Myopia, Refractive Error
A Comparison of Two Color Contact Lenses in Habitual Clear Contact Lens Wearers
The purpose of this study was to evaluate overall satisfaction with AIR OPTIX® COLORS as compared to FRESHLOOK® COLORBLENDS contact lenses.
- Trial name
- NCT01782482
- Testing
- Lotrafilcon B contact lens with color, Phemfilcon A contact lens with color
- Volunteers
- 574 people
- Sponsor
- Alcon Research
Myopia
Low-dose Atropine for the Prevention of Myopia Progression in Danish Children
Myopia (nearsightedness) is increasing in prevalence throughout the world. It is associated with a risk of potentially blinding complications such as retinal detachment and myopic maculopathy.
- Trial name
- APP (NCT03911271)
- Testing
- 0.1% atropine and 0.01% atropine, 0.01% atropine, 0.9% Sodium-chloride
- Where
- 3 sites in Denmark
- Volunteers
- 97 people
- Sponsor
- Line Kessel
Myopia, Hyperopia
Corneal Asphericity Adjustment (Q Adjustment) in Myopic and Hyperopic Patients Undergoing Refractive Correction With Excimer Laser
To study the postoperative results in myopic and hyperopic eyes treated with two different laser ablation algorithms (STD and F-CAT), both FDA approved.
- Trial name
- NCT01296867
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Democritus University of Thrace
Myopia
Development of Bioluminescent Myopia Prevention and Control Instrument and Evaluation of Its Effect on Myopia
Based on the Tongren Myopia and Amblyopia Therapeutic Apparatus (a 650nm low-level red-light device) developed by the research team in the previous phase, the device was modified by replacing the light source with LED light.
- Trial name
- NCT07208617
- Testing
- RED-light device using LED light source, Control
- Where
- China
- Volunteers
- 206 people
- Sponsor
- Beijing Tongren Hospital
Myopia, Outdoor Activity
Vision Care Intervention for Lower Grade School Children in Taiwan
The purpose of this study is making use of school policy- recess outside classroom (ROC7-11) for increasing the time spent outdoor during recess and encouraging children spent time outdoor up to 11 hours in each week to…
- Conditions
- Myopia, Outdoor Activity, Policy of Recess Outside Classroom
- Trial name
- NCT02082743
- Testing
- Outdoor activity in recess time
- Where
- Taiwan
- Volunteers
- 1,020 people
- Sponsor
- Chang Gung Memorial Hospital
Axial Length, Myopia
Study of the Intervention Effect of Outdoor Activity Period Patterns in Promoting Myopia Among Preschool Children
This study is a randomized controlled trial based on outdoor activity interventions at specific time periods, involving preschool children aged 4 to 5 years.
- Trial name
- NCT06607640
- Testing
- Increase outdoor activity time during specific time periods
- Volunteers
- 210 people, healthy volunteers welcome
- Sponsor
- Fangbiao Tao
Vision Loss
First-Sight Refractive Error Correction in the Developing World
The aim of this study is to test the efficacy of the First-Sight refractive kit designed to provide refractive correction of simple hyperopia, myopia and astigmatism with autorefraction.
- Trial name
- NCT01598818
- Where
- 2 sites in United States, Haiti
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- University of Nebraska
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
Myopia
Wavelength Intervention for Nearsighted Kids
The goal of this clinical trial is to learn if daily brief periods of specialized soft contact lens wear work to slow the progression of nearsightedness in children.
- Trial name
- WINK (NCT06598423)
- Testing
- Specialized soft contact lens 1, Specialized soft contact lens 2
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- University of Alabama at Birmingham
Myopia, Astigmatism
Safety and Efficacy Evaluation of a New Contact Lens Disinfecting Solution in Soft Contact Lens Wearers
The purpose of this study is demonstrate substantial equivalence of an investigational contact lens disinfecting solution to a commercially available contact lens solution in silicone hydrogel and soft contact lens wearers.
- Conditions
- Myopia, Astigmatism, Hyperopia, Refractive Error
- Trial name
- NCT01912768
- Testing
- FID 120947A contact lens disinfecting solution, renu fresh multi-purpose solution, Soft contact lenses
- Volunteers
- 362 people
- Sponsor
- Alcon Research