Clinical trials: Refractive Error, open to volunteers
Corneal Astigmatism, Cataract
Effectiveness, Stability and Influence Factors of Femtosecond Laser Assisted Cataract Surgery
What is this study about? This study looks at whether a laser procedure called femtosecond laser-assisted arcuate keratotomy (FSAK) helps people with both cataracts and mild astigmatism see more clearly after cataract surgery.
- Trial name
- NCT07081919
- Testing
- femtosecond laser-assisted arcuate keratotomy (FSAK) combined with standard cataract surgery
- Where
- China
- Volunteers
- 105 people
- Sponsor
- Eye & ENT Hospital of Fudan University
Myopia
AI-Stratified Myopia Control for Children in Remote Areas
This cluster-randomized controlled trial aims to evaluate the effectiveness and cost-effectiveness of an artificial intelligence-based, risk-stratified, tiered intervention model for childhood myopia prevention and control in…
- Trial name
- NCT07825428
- Testing
- Routine Screening and Referral, AI-Guided Tiered Management
- Where
- 3 sites in China
- Volunteers
- 1,600 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia, Pre-myopia
A Pilot Evaluation of Refractive Error Progression in Pre-Myopic Children in Singapore With and Without Myopia Control Spectacles
This study aims to find out whether ZEISS MyoActive lenses can help prevent short-sightedness from developing in children. We aim to recruit at least 50 children in total for this study.
- Trial name
- NCT07779941
- Testing
- Zeiss MyoActive lenses, Single Vision Lenses
- Where
- Singapore
- Volunteers
- 124 people, healthy volunteers welcome
- Sponsor
- Singapore National Eye Centre
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
Refractive Errors
Clinical Data Collection of Myopic Patients After PTK-PRK With CZM MEL 90 Excimer Laser
The objective of the clinical investigation presented to is to verify predictions of post-operative PTK-PRK refractive outcome made by the EpiMaster application software by comparing these to post-operative clinical data after…
- Trial name
- NCT06996353
- Testing
- PTK-PRK refractive treatment
- Where
- 2 sites in India
- Volunteers
- 150 people
- Sponsor
- London Vision Clinic
Posterior Capsule Opacification, Pseudophakia
IOL Position and Refractive Change After Nd:YAG Laser Posterior Capsulotomy
After cataract surgery, the thin natural membrane that holds the artificial lens in place can slowly turn cloudy. This is called posterior capsule opacification. It makes vision blurry and can cause glare.
- Conditions
- Posterior Capsule Opacification, Pseudophakia, Refractive Errors
- Trial name
- YAG-IOL-POS (NCT07802145)
- Testing
- Nd:YAG laser posterior capsulotomy, Anterior segment swept-source OCT, Swept-source optical biometry
- Where
- Austria
- Volunteers
- 80 people
- Sponsor
- Vienna Hospital Association
Age Related Cataracts, Astigmatism
Rotation of Hydrophobic Acrylic Lenses - Rayner RA0800C & Alcon Clareon & Hoya Nanex & Hoya Vivinex XY1-EM & RayOne EMV Toric & PODEYE Toric
The investigational devices are approved intraocular lenses (IOL) intended to be implanted after phacoemulsification in individuals suffering from age-related cataract with the need of cataract surgery.
- Trial name
- NCT03803852
- Testing
- Intraocular Lens Implantation
- Where
- Austria
- Volunteers
- 750 people
- Sponsor
- Medical University of Vienna
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
A Prospective Study on Clinical Effectiveness After SMILE Versus SMILE Xtra in Myopia
To evaluate the clinical efficacy and refractive stability of SMILE Xtra compared to SMILE in patients with myopia
- Trial name
- NCT06973278
- Testing
- SMILE, SMILE Xtra
- Where
- China
- Volunteers
- 200 people
- Sponsor
- Shanghai Zhongshan Hospital
Axial Length, Myopia
China Children Eye Study
The primary objective of this multi-center, observational study is to establish the reference ranges of axial length in Chinese children and adolescents.
- Conditions
- Axial Length, Myopia, Child Development
- Trial name
- CCES (NCT05770661)
- Where
- 2 sites in China
- Volunteers
- 30,000 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia
Corneal Biomechanics and Stromal Tissue Characteristics in Patients Undergoing SMILE
This prospective observational cohort study will investigate corneal biomechanical characteristics and their relationships with corneal stromal tissue features in adult patients undergoing clinically indicated small-incision…
- Trial name
- SMILE (NCT07906327)
- Testing
- SMILE
- Where
- China
- Volunteers
- 200 people
- Sponsor
- Tongji University
Primary Open Angle Glaucoma, Myopia
Diagnostic Innovations in Glaucoma Study
The overarching goal of our research study is to evaluate changes in visual function and optic nerve topography (the structure of the back of the eye) in patients with glaucoma (increased susceptibility to pressure inside the eye…
- Trial name
- DIGS (NCT00221897)
- Where
- United States
- Volunteers
- 3,000 people, healthy volunteers welcome
- Sponsor
- University of California, San Diego
Myopia
Choroidal Response to the Modified Defocus Incorporated Multiple Segments Spectacle Lenses
The goal of this study is to investigate the short-term changes in choroidal thickness and efficacy of the study spectacle lenses in children.
- Trial name
- NCT07547072
- Testing
- Modified Defocus Incorporated Multiple Segments lens (D1), Modified Defocus Incorporated Multiple Segments lens (D2)
- Where
- Hong Kong
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Myopia
Evolution of Ocular Growth in Myopic Children: A Prospective Cohort Study
Myopia and high myopia are the leading causes of visual impairment and blindness worldwide. The total number of myopic people globally was estimated to be 2.6 billion in 2020, and it could reach 4.8 billion by 2050 unless…
- Trial name
- PREMYOM1000 (NCT06895044)
- Testing
- ophtalmologic follow-up, ophtalmological follow-up
- Where
- France
- Volunteers
- 1,000 people
- Sponsor
- Fondation Ophtalmologique Adolphe de Rothschild
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, Anisometropia
Assessing the Magnitude of Anisometropia in Patients Wearing Misight 1 Day Contact Lens
The effectiveness of Misight 1 Day Contact Lens in retarding anisometropic progression has not been investigated before. This study is aimed to elucidate the efficacy of Misight 1 Day Contact Lens for anisometropia control.
- Trial name
- NCT06744478
- Testing
- Misight 1 Day Contact Lens
- Where
- Taiwan
- Volunteers
- 50 people
- Sponsor
- Buddhist Tzu Chi General Hospital
Myopia Progressing
Clinical Efficacy and Mechanism Exploration of MR-61 in Delaying the Progression of Myopia
To investigate whether probiotic MR-61 can assist in slowing down the progression rate of myopia (a prospective randomized controlled study).
- Trial name
- NCT07298824
- Testing
- Investigational Bifidobacterium Preparation MR-61
- Where
- China
- Volunteers
- 164 people
- Sponsor
- Second Affiliated Hospital of Nanchang University
Age - Related Macular Degeneration (AMD), Diabetic Macular Edema
Wide Field OCTA in Ocular Diseases
The main retinal diseases, whether or not associated with specific mutations genetic, cause progressive degeneration of vascular retinal structures and not vascular, resulting in decreased visual function.
- Conditions
- Age - Related Macular Degeneration (AMD), Diabetic Macular Edema, Diabetic Retinopathy, Myopia
- Trial name
- WOOD-2025 (NCT07298174)
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- IRCCS San Raffaele
Myopia
Multicenter Evaluation of Near Vision and Outdoor Time in Kids Study
Currently, optical and pharmacological interventions have been developed to prevent the progression of childhood myopia. However, no myopia control strategy has been shown to have complete efficacy in controlling myopia…
- Trial name
- MENOK (NCT06119243)
- Testing
- Vivior
- Where
- 5 sites in United States, Australia
- Volunteers
- 230 people
- Sponsor
- The University of New South Wales
Myopia, Refractive Errors
School-based Myopia Prevention Trial for Children With Adequate Hyperopic Reserve
This is a prospective, school-based randomized controlled trial designed to evaluate a wearable device-supported outdoor activity program for myopia prevention in primary school students with adequate hyperopic reserve.
- Conditions
- Myopia, Refractive Errors, Hyperopia
- Trial name
- SPARK (NCT07746752)
- Testing
- Wearable Device-Supported Myopia Prevention Program, Eye Health Education
- Where
- China
- Volunteers
- 104 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center