Clinical trials: Refractive Error
Myopia
Dual Focus Soft Contact Lens Wear Cessation Study
The purpose of this study is to investigate the effect of ceasing treatment with dual focus soft contact lenses.
- Trial name
- NCT05779072
- Testing
- Single Vision Soft Contact Lens
- Where
- 4 sites in Canada, Portugal and 2 more
- Volunteers
- 83 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Myopia
A Comparative Analysis of Myopia Prevalence Among Madarsa Students vs. Non-Madarsa Students in Sukkur
Myopia (nearsightedness) has become a major global health concern, particularly among students, due to factors such as prolonged screen time, close-up work, and limited outdoor activities.
- Trial name
- NCT06913972
- Where
- Pakistan
- Volunteers
- 364 people
- Sponsor
- Superior University
Developmental Delay
Effects of Power Ball on Proximal Muscle and Refractive Errors in Developmental Delay.
When a child does not meet developmental milestones at the anticipated times, it is referred to as having a developmental delay. These benchmarks cover social, emotional, cognitive, physical, and communication abilities.
- Trial name
- NCT06461572
- Testing
- conventional therapy, conventional therapy along with standard therapy and stability exercises.
- Where
- Pakistan
- Volunteers
- 32 people
- Sponsor
- Riphah International 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
Time Outdoors as an Intervention for Myopia in Children
The purpose of this study is to determine whether improved outdoor time has an effect on the onset and progression of myopia in children.
- Trial name
- NCT02980445
- Testing
- Outdoor activity 1, Outdoor activity 2
- Volunteers
- 7,200 people
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Amblyopia, Anisometropia
Enhanced Housing Photoscreeners 2WIN and GoCheckKids Compared in Burma and Alaska
"Adaptica" (Padova, Italy) designed a fixed-distance, dark portable tube with power and remote control for the "2WIN: photoscreener.
- Trial name
- NCT04068129
- Testing
- photoscreen
- Where
- United States
- Volunteers
- 162 people, healthy volunteers welcome
- Sponsor
- Alaska Blind Child Discovery
Myopia
A Phase III Clinical Study of the Efficacy and Safety of Two Low-concentration Atropine Sulfate Eye Drops
This study was a randomized, double-blind, placebo-controlled, multicenter, superiority design, phase III clinical trial to compare the efficacy and safety of two low-concentration atropine sulfate eye drops versus placebo in…
- Trial name
- Mini-CHAMP (NCT06209281)
- Testing
- Lower dose atropine sulfate eye drops, Low dose atropine sulfate eye drops
- Where
- China
- Volunteers
- 526 people
- Sponsor
- Zhaoke (Guangzhou) Ophthalmology Pharmaceutical Ltd.
Myopia
Stellest Lenses and Low-concentration Atropine Myopia Control Among Children
The prevalence of myopia is increasing globally, especially in Asian countries. 70-80% of the young population suffers from myopia, and almost 20% have high myopia.
- Trial name
- NCT06344429
- Testing
- Stellest Lenses, Stellest Lenses+0.05% atropine, Single vision Lenses+0.05% atropine
- Where
- Taiwan
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Essilor-Polylite Taiwan Co., Ltd.
Myopia, High Myopia
Efficacy and Safety of Spectacle Lenses With H.A.L.T. MAX Technology on High Myopia Control in Children and Adolescents
Children aged 7-14 years with high myopia were randomly assigned to a control group or an intervention group at a 1:1 ratio. The intervention group wore H.A.L.T.
- Trial name
- NCT07120737
- Testing
- H.A.L.T. MAX spectacles
- Where
- China
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia, Light; Therapy, Complications
Optimizing Light Exposure for Myopia Prevention and Control (LightSPAN)
The goal of this clinical trial is to evaluate whether the optimization of daily exposure to light in primary school children can lead to better myopia prevention and control.
- Conditions
- Myopia, Light; Therapy, Complications, Myopia Progression, Short-Sighted
- Trial name
- LightSPAN (NCT06631339)
- Testing
- Light Intervention, Digital Intervention, Control Group
- Where
- 5 sites in Singapore
- Volunteers
- 396 people, healthy volunteers welcome
- Sponsor
- National University of Singapore
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, Refractive Errors
Real-World Study of Myopia Prevention and Control in Children
This prospective, school-based cohort study aims to enroll approximately 15,000 primary school students from multiple districts in Shanghai, China and to observe the outcomes on myopia prevention and control in children with…
- Conditions
- Myopia, Refractive Errors, Children, Cohort
- Trial name
- NCT06849895
- Where
- China
- Volunteers
- 15,000 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia
The Effects of Different Outdoor Light Exposure Modes on Retinal Blood Flow
In 2020, the overall myopia rate among children and adolescents in my country was 52.7%. The COVID-19 pandemic has increased students' time of indoor eye-using, and it showed that the light exposure intensity of myopic students…
- Trial name
- NCT05594732
- Testing
- Weak outdoor light, Strong outdoor light
- Where
- China
- Volunteers
- 81 people
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia
Dietary Supplement for Myopia Control
The purpose of this clinical trial is to investigate the changes in choroidal thickness and vasculature in myopic children following oral supplementation.
- Trial name
- NCT07406906
- Testing
- Oral dietary supplement provided in a capsule format (3 active capsules/ per day)
- Where
- Hong Kong
- Volunteers
- 156 people
- Sponsor
- The Hong Kong Polytechnic University
Myopia, Hyperopia
Corneal and Conjunctival Sensitivity and Staining Study
The primary objective of this study is to compare subjective symptoms and ocular health in a group of individuals who are currently wearing soft contact lenses on a daily wear basis, after a short period of no lens wear and…
- Trial name
- NCT00455455
- Testing
- Optifree RepleniSH Multipurpose Disinfecting Solution, ReNu Multiplus Multipurpose Solution
- Where
- Canada
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Waterloo
Ametropia
Contact Lens Wettability
The purpose of this study is to compare the wettability of contact lenses disinfected with three marketed contact lens care solutions.
- Trial name
- NCT00349063
- Testing
- soft contact lens, Soft contact lens multipurpose disinfection regimen
- Where
- Canada
- Volunteers
- 55 people
- Sponsor
- University of Waterloo
Myopia
To Evaluate the Efficacy and Safety of Multifocal Soft Contact Lens in Myopia Control
The objective of this study is to investigate the efficacy and safety of soft lens in myopia control.
- Trial name
- NCT03413085
- Testing
- soft contact lens
- Where
- 3 sites in Taiwan
- Volunteers
- 59 people, healthy volunteers welcome
- Sponsor
- Largan Medical Co., Ltd.
Ametropia, Myopia; Refractive Error
The Objective of This Study is to Evaluate the Perfomance of a Photorefraction Device for Screening Ametropia in Children. Eligible Participants Will Undergo Multiple Refractive Error Measurements, Visual Acuity and Strabismus Assessments During a Single Evaluation Visit.
The goal of this clinical trial is to evaluate the performance of a photorefraction screener in terms of sensibility, sensitivity and accuracy on children aged 3 to 8 y.o.
- Conditions
- Ametropia, Myopia; Refractive Error, Myopia; Astigmatism
- Trial name
- NCT06882408
- Testing
- Photorefraction device under investigation, Comparator device, Tabletop auto-refractometer, Comparator device, portable photorefraction device
- Where
- 2 sites in France
- Volunteers
- 315 people, healthy volunteers welcome
- Sponsor
- Essilor International
Accommodation Disorder, Keratoconus
Clinical Investigation for a Multifunction Ophthalmic Measurement Device
The purpose of this clinical investigation is to evaluate the clinical utility of a multifunctional measuring device for Ophtalmology.
- Conditions
- Accommodation Disorder, Keratoconus, Dry Eye, Refractive Errors
- Trial name
- NCT06565091
- Testing
- Measurements of physiological parameters of the anterior chamber, Measurements of the Axial biometry
- Where
- France
- Volunteers
- 378 people, healthy volunteers welcome
- Sponsor
- Essilor International
Child, Only
Refractive Disorders and Seric Vitamin D Level in Children With Disabilities
The investigator want to determine the refractive status of 80 children with disabilities and of 81 healthy children from a witness group.
- Trial name
- REDIC (NCT04827511)
- Testing
- Refraction measurement with auto-ref-keratometer Canon
- Where
- Romania
- Volunteers
- 161 people, healthy volunteers welcome
- Sponsor
- Holhos Larisa Bianca