Clinical trials: Myopia
Visual Quality, Axial Length
The Influence of Axial Length on Visual Quality Following SMILE Surgery in Patients with High Myopia
This retrospective study aimed to investigate the subjective and objective visual outcomes following Small Incision Lenticule Extraction (SMILE) surgery in high myopic patients with varying axial lengths (AL).
- Conditions
- Visual Quality, Axial Length, High Myopia
- Trial name
- NCT06898164
- Testing
- This study does not involve any interventions
- Where
- China
- Volunteers
- 113 people, healthy volunteers welcome
- Sponsor
- yuhao shao
Myopia
Comparison of Femto LDV Z8 Corneal Lenticule Extraction for Advanced Refractive Correction (CLEAR) and Visumax Small Incision Lenticule Extraction (SMILE)
This observational study aims to compare two laser corrective procedures for treating myopia and myopic astigmatism: a novel refractive technique, the CLEAR procedure, and the established SMILE procedure.
- Trial name
- NCT06774651
- Testing
- Procedure: Corneal lenticule extraction for advanced refractive correction (CLEAR), Procedure: Small Incision Lenticule Extraction (SMILE)
- Where
- Singapore
- Volunteers
- 65 people, healthy volunteers welcome
- Sponsor
- Singapore Eye Research Institute
Myopia, Hyperopia
Comparing Low-cost Handheld Autorefractors - a Practical Approach to Measuring Refraction in Low Resource Settings
Study compares four portable vision measurement and eye-imaging technologies in terms of accuracy and time and ease of use with older adult (ages 40-100) participants in a developing-country setting (India).
- Trial name
- NCT03456245
- Testing
- Vision device validation
- Volunteers
- 205 people, healthy volunteers welcome
- Sponsor
- Harvard School of Public Health (HSPH)
Myopia
Impact of Ultraviolet Radiation and Environmental Factors on Human Ocular Biomechanics
This observational study aims to explore whether ultraviolet (UV) radiation and other environmental factors are associated with ocular biomechanical properties in healthy volunteers aged 18-44 years without ocular diseases…
- Trial name
- NCT06993077
- Testing
- environment Exposure
- Where
- China
- Volunteers
- 3,000 people, healthy volunteers welcome
- Sponsor
- Tianjin Eye Hospital
Myopia
Change in Choroidal Thickness of Myopic Eyes With a Myopia Control Contact Lens
In this study, the direct effect of the MiSight contact lens (Cooper Vision), a daily disposable contact lens recently approved in Germany for the treatment of myopia, will be investigated.
- Trial name
- NCT06636019
- Testing
- Myopia control contact lens
- Where
- Germany
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University Hospital Augsburg
Myopia
Silicone Hydrogel Soft Contact Lens 7-Day Extended Wear Basis
The objective of this study is to evaluate the safety and effectiveness of the Bausch + Lomb samfilcon A soft (hydrophilic) contact lens, a new silicone hydrogel contact lens, compared to the Bausch + Lomb PureVision® soft…
- Trial name
- NCT02939950
- Testing
- Bausch + Lomb Samfilcon A Soft Contact Lens, Bausch + Lomb Pure Vision Soft Contact Lens
- Where
- United States
- Volunteers
- 816 people, healthy volunteers welcome
- Sponsor
- Bausch Health Americas, Inc.
Myopia, Progressive, Choroid Disease
Choroidal Change on OCTA in Eyes With High Myopia
Myopia is a global healthy concern, especially the high myopia and pathological myopia among Asian populations. However, its mechanism still remains largely unclear.
- Trial name
- NCT04255524
- Testing
- Optic coherence tomography angiography (OCTA)
- Where
- China
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- The First Affiliated Hospital with Nanjing Medical University
Myopia
Clinical Evaluation of a Myopia Control Lens in Slowing Myopia Progression (DAL)
This is a mono-centre, prospective, one-arm, unmask clinical trial to evaluate the effectiveness of test lens in slowing myopia progression with respect to axial length elongation compared to a single vision spectacle lens from…
- Trial name
- NCT05840185
- Testing
- Test myopia control lenses (DAL)
- Where
- Singapore
- Volunteers
- 41 people, healthy volunteers welcome
- Sponsor
- Essilor International
Myopia
Assessment of Measurement Variability Across Automated Biometry Devices
This is a non-interventional prospective, comparative study of white-to-white, corneal thickness, and anterior chamber depth measurements as taken on the Orbscan II compared to the IOL Master 700 (Zeiss), IOL Master 500 (Zeiss)…
- Trial name
- NCT06045325
- Testing
- Orbscan II, IOL Master 700, IOL Master 500
- Where
- United States
- Volunteers
- 204 people, healthy volunteers welcome
- Sponsor
- Berkeley Eye Center
Myopia
Echothiophate Iodide for the Prevention of Progression of Myopia
The purpose of this study is to test the hypothesis that myopia progression can be slowed or prevented by low dose Echothiophate Iodide.
- Trial name
- NCT02544529
- Testing
- Echothiophate Iodide 0.03% Ophthalmic Solution, Carboxymethylcellulose Sodium (0.5%)
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Danbury Eye Physicians & Surgeons, PC
Myopia
Study Intended to Evaluate the Safety and Effectiveness of a Johnson & Johnson Vision Care Inc, (JJVCI) Contact Lens for Use on an Extended-wear Basis for up to 7 Days (6 Nights).
Study in the US intended to evaluate the safety and effectiveness of a Johnson \& Johnson Vision Care Inc, (JJVCI) contact lens for use on an extended-wear basis for up to 7 days (6 nights).
- Trial name
- NCT00241280
- Testing
- etafilcon A, galyfilcon A
- Where
- 25 sites in United States
- Volunteers
- 504 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Myopia
Myopia Control With the Multi-segment Lens
The purpose of this study is to determine if the Multiple-Segment (MS) spectacle lens can slow myopia progression in Hong Kong schoolchildren. MS lens is also called Defocus Incorporated Multiple Segments (DIMS) spectacle lens
- Trial name
- NCT02206217
- Testing
- Multiple-Segment spectacle lens
- Where
- 2 sites in China, Hong Kong
- Volunteers
- 183 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
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
Performance of Somofilcon A Over One Week in Wearers Adapted to Omafilcon A
The objective of the study is to determine if habitual or adapted contact lens wearers of Omafilcon A can be confidently refit into Somofilcon A lenses and be successful after one week of daily wear.
- Trial name
- NCT03226353
- Testing
- somofilcon A, omafilcon A
- Where
- Canada
- Volunteers
- 77 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Myopia
Clinical Evaluation on Using Personal Face Masks With Spectacles Versus Contact Lenses
The aim of this study was to explore satisfaction with vision correction and ease of use of PFM (Personal Face Masks) in a group of spectacle wearers who were randomised to continue wearing spectacles or be fitted with daily…
- Trial name
- NCT04658797
- Testing
- somofilcon A Daily Disposable Contact Lens, Single Vision Spectacle for Vision Correction, Personal Facemask
- Where
- United Kingdom
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Myopia Progressing
Light Diffraction Glasses in Preventing and Controlling Myopia in Adolescents
This study aims to evaluate the effectiveness of lenses with light diffraction glasses in controlling the progression of myopia in children and adolescents, and to explore the feasibility of effective design, and apply…
- Trial name
- NCT06927414
- Testing
- Functional lens
- Where
- China
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
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
Hyperopia, Myopia
Clinical Study of Clariti Monthly Contact Lens
A clinical study report follows; this clinical study evaluated the safety and efficacy of SAUFLON CLARITI Soft Silicone Hydrogel Contact Lens with UV Blocker by comparison with Air Optix Aqua silicone hydrogel contact lenses…
- Trial name
- NCT01392950
- Testing
- Air Optix Aqua, Clariti
- Where
- United Kingdom
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Sauflon Pharmaceuticals Ltd
Myopic Progression
Monthly Replacement Orthokeratology for Myopia Control in Young Children
The two-year prospective study aims at investigating frequently replacement effect on myopia control in young children, and the use of weekly protein removal system in monthly replacement modality orthokeratology lenses on…
- Trial name
- MR2 (NCT04293328)
- Testing
- orthokeratology, Menicon Progent A+B
- Where
- Hong Kong
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Myopia
Myopia Prevalence in Canadian School Children - a Pilot Study
The goal of this study is to determine the prevalence of nearsightedness in Canadian school children living in the Waterloo Region.
- Trial name
- Falcon (NCT01942057)
- Where
- Canada
- Volunteers
- 173 people, healthy volunteers welcome
- Sponsor
- University of Waterloo