Clinical trials: Refractive Error
Myopia
Trial of Myopia Prevention Using +3D Lenses
The purpose of this study is to assess whether a short-term imposed myopic defocus is effective in preventing the development and progression of juvenile-onset myopia in Chinese children.
- Trial name
- PLS (NCT00627874)
- Testing
- +3D Lenses
- Volunteers
- 1,200 people
- Sponsor
- Sun Yat-sen University
Myopia, Accommodation Spasm
Effect of VR and Accommdation Relax on Controlling Myopia in Children
This study evaluates the effect of virtual reality and accommodation relax technique on controlling onset and development of myopia in school-aged children.
- Conditions
- Myopia, Accommodation Spasm, Children
- Trial name
- NCT03427697
- Testing
- Virtual reality and accommodation relax techniques in combination
- Where
- China
- Volunteers
- 1,000 people
- Sponsor
- Beijing Tongren Hospital
Myopia
Safety and Efficacy of T10430 Eye Drops in Controlling Paediatric Myopia Progression
Axial myopia is a type of nearsightedness that happens when the eye is too long from front to back. This causes distant vision to be blurry.
- Trial name
- NCT07522242
- Testing
- T10430 lower dose, T10430 middle dose, T10430 higher dose
- Where
- 10 sites in Jordan, South Africa and 1 more
- Volunteers
- 200 people
- Sponsor
- Laboratoires Thea
Myopia, Obesity
Trial of a Novel Family-Based Intervention to Increase Outdoor Time and Fitness
This study aims to implement a new family-based health behavior community program to increase time spent outdoors and physical activity among Singapore children aged 6 to 12 years in a 1-year randomized clinical trial.
- Trial name
- FIT (NCT01388205)
- Testing
- Family-based Outdoor program
- Where
- Singapore
- Volunteers
- 285 people, healthy volunteers welcome
- Sponsor
- National University of Singapore
Ametropia, Myopia
Post-market Clinical Follow-up Study of Alcon TOTAL30® Contact Lenses (Lehfilcon A)
The purpose of this Post-Market Clinical Follow-Up (PMCF) study is to continuously assess the visual performance and safety of TOTAL30 Sphere and TOTAL30 for Astigmatism contact lenses in a real-world setting across a broad…
- Conditions
- Ametropia, Myopia, Hyperopia, Astigmatism
- Trial name
- NCT06408649
- Testing
- Lehfilcon A spherical contact lenses, Lehfilcon A toric contact lenses
- Where
- United States
- Volunteers
- 129 people
- Sponsor
- Alcon Research
Astigmatism, Myopia
Effect of a Myopia Control Lens on the Astigmatism in Children
The goal of this clinical trial is to investigate over a one-year period the effect of myopia control spectacle lenses on astigmatism in children aged 6 to 13 years with myopia and astigmatism.
- Trial name
- MAC (NCT07810725)
- Testing
- Lenslet-based myopia control spectacle lens
- Volunteers
- 15 people
- Sponsor
- Essilor International
Refractive Error, Visual Impairment
The Baltimore Reading and Eye Disease Study
The Baltimore Reading and Eye Disease Study (BREDS) is a two year study to determine the prevalence of vision problems in an early school age population with reading difficulty.
- Conditions
- Refractive Error, Visual Impairment, Convergence Insufficiency, Reading Disabilities
- Trial name
- BREDS (NCT02607384)
- Testing
- Eyeglass wearing, Orthoptic exercises, Specialist referral
- Volunteers
- 328 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins University
Myopia, Amblyopia
Real Word Study on Myopia Control With Repeated Red Light Therapy for Ages of 3~6 Years Old
Repeated Red Light Therapy had been used as an amblyopia therapy for children as well as the myopia control in primary schools. However, ultra low lever of red light therapy with irradiance of 0.37mW and 0.60mW effectiveness and…
- Trial name
- RMC (NCT05811598)
- Testing
- repeated ultra low lever red light
- Where
- China
- Volunteers
- 60 people
- Sponsor
- Beijing Airdoc Technology Co., Ltd.
Myopia, Pre-myopia
Early-Onset Myopia Intervention Project
The prevalence of myopia among children has been increasing year by year, which has become a globle public health issue. Studies have shown that defocusing lenses and atroping eyedrops can control the progression of myopia, but…
- Trial name
- EOM (NCT07176949)
- Testing
- 0.01% atropine eye drops, 0.05% atropine eye drops, Spectacle lenses with highly aspherical lenslets
- Where
- China
- Volunteers
- 508 people
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia
The Immediate Effect of Defocus Spectacles On the Choroid Thickness Using Optical Coherence Tomography on Children
The purpose is to examine temporary changes in the subfoveal choroid thickness after removal and after resumed use of Defocus Incorporated Multiple Segment Spectacle Lenses (DIMS).
- Trial name
- TIDOCT (NCT06234189)
- Testing
- Defocus Incorporated Multiple Segment Spectacle Lenses (DIMS)
- Where
- Denmark
- Volunteers
- 16 people
- Sponsor
- Vejle Hospital
Myopia, Orthokeratology
Effectiveness of Myopia Control by Breath-O Correct Orthokeratology Lenses
This is a 24-month longitudinal randomized controlled trial aiming to evaluate the effectiveness of myopia control by Breath-O correct orthokeratology lenses in different myopia progression groups classified according to their…
- Trial name
- NCT03919396
- Testing
- Breath-O orthokeratology lenses
- Where
- Hong Kong
- Volunteers
- 91 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Refraction Error, Myopia
Age and Refraction in Predicting Myopia Progression in COVID-19
To determine the longitudinal changes of age and refraction in predicting myopia progression with risk under the coronavirus disease 2019 (COVID-19) pandemic in a 3-year follow-up of a Chinese cohort.
- Trial name
- NCT05305274
- Testing
- screening
- Where
- China
- Volunteers
- 34,400 people, healthy volunteers welcome
- Sponsor
- Tianjin Eye Hospital
Myopia
Study Comparing Eye Growth Over Time in Children Using Two Myopia Control Lenses
The goal of this clinical trial is to investigate the short-term changes in the eye structure while wearing two types of lenslet-based myopia control lenses over a period of 6 months in children aged 6 to 13 years with myopia.
- Trial name
- NCT07253064
- Testing
- MCL 1, MCL 2
- Where
- Singapore
- Volunteers
- 20 people
- Sponsor
- Essilor International
Visual Impairment, Refractive Error
Frequency of Visual Impairment Among School Children and Effectiveness of mHealth Referral Reminder on Uptake of Referral Services
This study tested whether mobile health (mHealth) tools can affect referral uptake among schoolchildren with vision problems.Visual impairment in children often goes untreated in low- and middle-income countries, even when…
- Trial name
- NCT06616051
- Testing
- Multicomponent SMS reminder
- Where
- Pakistan
- Volunteers
- 320 people, healthy volunteers welcome
- Sponsor
- Syed Fawad Mashhadi
Myopia
Influence of Corneal Biomechanical Properties on Myopia Control
to analyze the changes in corneal biomechanics of myopic children with different treatment (low concentration atropine eye drops and orthokeratology) and explore the possible mechanism of myopia control
- Trial name
- NCT05090592
- Testing
- orthokeratology, 0.01 atropine
- Where
- Taiwan
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Buddhist Tzu Chi General Hospital
Cataract, Epiretinal Membrane
Combined 25-gauge Vitrectomy and Cataract Surgery With Toric Intraocular Lens With Idiopathic Epiretinal Membrane.
Toric intraocular lens (IOL) is now widely used for the cataract surgery with preoperative corneal astigmatism. Symptomatic epiretinal membrane (ERM) is often treated with 25-gauge transconjunctival sutureless vitrectomy…
- Conditions
- Cataract, Epiretinal Membrane, Corneal Astigmatism
- Trial name
- NCT02328157
- Testing
- Vitrectomy with cataract surgery and toric IOL, Vitrectomy with cataract surgery and common IOL
- Where
- Japan
- Volunteers
- 30 people
- Sponsor
- Kagawa University
Myopia
Effects on Ocular Parameters of Myopic Eyes After Orthokeratology in Myopic Children
Effects on Ocular Parameters of Myopic Eyes After Orthokeratology in Myopic Children
- Trial name
- NCT03516357
- Where
- China
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Refractive Errors, Ametropia
Performance of Refractometers With Self-adjusting Lenses Compared to Cycloplegia in Children (REFRALENS)
This study aimed to compare refractive measurements using Vision-S™ 700, an immersive and compact phoropter with a tunable-focus lens, and Vision-R™ 800, a phoropter with a tunable-focus lens without immersion, with cycloplegic…
- Trial name
- REFRALENS (NCT06668246)
- Testing
- Vision-S™ 700, an immersive and compact phoropter with a tunable-focus lens, and Vision-R™ 800, a phoropter with a tunable-focus lens without immersion, with cycloplegic refraction serving as the gold
- Where
- France
- Volunteers
- 43 people
- Sponsor
- University Hospital, Brest
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
Ophthalmic Compatibility During Seven Days of Continuous Wear of Silicone Hydrogel Lenses
The purpose of this study is to assess the ophthalmic compatibility of three different silicone hydrogel lenses worn on an overnight basis for six nights.
- Trial name
- QUINCE (NCT00934102)
- Testing
- Narafilcon A contact lens, Lotrafilcon A contact lens, Galyfilcon A contact lens
- Where
- Canada
- Volunteers
- 57 people
- Sponsor
- CIBA VISION