Clinical trials: Eye--Refractive Errors
Refractive Ametropia
The Clinical Performance of Two Reusable Silicone Hydrogel Contact Lenses
The purpose of this study is to assess the clinical performance of two reusable silicone hydrogel contact lenses when worn on a daily wear basis.
- Trial name
- NCT05766787
- Testing
- Serafilcon A contact lenses, Senofilcon A contact lenses, CLEAR CARE
- Where
- 15 sites in United States
- Volunteers
- 190 people
- Sponsor
- Alcon Research
Myopia, Safety Issues
The Safety and Effectiveness of Breath-O Lenses
In Hong Kong, approximately 80% of children are myopic by the end of childhood. There is intense interest currently in the potential role of peripheral defocus as a clinical treatment to slow myopia progression.
- Trial name
- NCT03616600
- Testing
- Breath-O-Correct Lens
- Where
- Hong Kong
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Presbyopia
The Development of New Functions of Esculin and Digitalis Glycosides Eye Drops: A Study on the Treatment of Presbyopia
Presbyopia is a condition where the eyes cannot focus a clear image on the retina when looking at nearby objects, commonly seen in people over 40 years old, which has a serious impact on people's daily work and life.
- Trial name
- NCT07151612
- Testing
- Esculin and Digitalisglycosides Eye Drops, Normal saline solution
- Where
- China
- Volunteers
- 62 people
- Sponsor
- Shanxi Eye 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
Myopia
Comparison of Lens Care Regimens With a Silicone Hydrogel Lens (Emerald)
The purpose of the study is to evaluate and compare, on a daily wear basis, the performance of two contact lens care solutions when used with silicone hydrogel soft contact lenses with regards to comfort and dryness symptoms.
- Trial name
- NCT00520351
- Testing
- ClearCare, Optifree Replenish
- Where
- Canada
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Waterloo
Myopia
LASIK Flap Thickness and Visual Outcomes Using the WaveLight FS200 Femtosecond Laser
The objective of this study is to evaluate the visual outcome, accuracy, predictability and complications of LASIK flap creation using the Alcon Wavelight FS200 Femtosecond laser and compare these results to those obtained using…
- Trial name
- FS200 (NCT02060461)
- Testing
- FS200 femtosecond laser LASIK, IntraLase femtosecond laser LASIK
- Where
- United States
- Volunteers
- 33 people
- Sponsor
- The Cleveland Clinic
Myopia
Evaluation of The Clinical Acceptance of Soft Contact Lenses for Myopia Control
The main objective of the study was to evaluate the clinical acceptance of soft contact lenses for Myopia control.
- Trial name
- NCT04709237
- Testing
- omafilcon A control lens, omafilcon A test lens 1, omafilcon A test lens 2
- Where
- United Kingdom
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Refractive Error
AIR OPTIX® COLORS Registration Trial
The purpose of this study was to evaluate the subjective and objective performance and the physiological response to AIR OPTIX® COLORS soft contact lenses compared with AIR OPTIX® AQUA contact lenses in participants with normal…
- Trial name
- NCT01440322
- Testing
- Lotrafilcon B contact lens with color, Lotrafilcon B contact lens
- Volunteers
- 150 people
- Sponsor
- CIBA VISION
Refractive Errors
Seeing to Learn in Sierra Leone
The main objective of the Sierra Leone Sees to Learn (SL2) trial is to assess the educational impact of providing free eyeglasses to students aged 9-20 years with uncorrected refractive error in Sierra Leone.
- Trial name
- SLII (NCT06065631)
- Testing
- Eyeglasses, Prescription slip
- Where
- Sierra Leone
- Volunteers
- 1,821 people
- Sponsor
- University of Minnesota
Myopia
Multi-Center Clinical Evaluation of Two Reusable Soft Contact Lenses
The purpose of this study is to compare the subjective performance of comfilcon A lens against samfilcon A lens after 4 weeks of reusable lens wear.
- Trial name
- NCT02542072
- Testing
- comfilcon A, samfilcon A
- Where
- 5 sites in United States, United Kingdom
- Volunteers
- 90 people
- Sponsor
- CooperVision, Inc.
Presbyopia
Safety and Effectiveness Study of the AcuFocus Corneal Inlay ACI 7000PDT in Presbyopes
The purpose of this study is to determine if the AcuFocus Corneal Inlay ACI 7000PDT will provide an effective method for the correction of presbyopia in patients who have normal distance vision but need a correction such as…
- Trial name
- ACI (NCT00850031)
- Testing
- AcuFocus Corneal Inlay
- Where
- 8 sites in Australia, Austria and 4 more
- Volunteers
- 119 people, healthy volunteers welcome
- Sponsor
- AcuFocus, Inc.
Myopia, Maculopathy
Optical Coherence Tomography Imaging of the Posterior Segment in High Myopia.
The prevalence of myopia in East Asia and Singapore in particular is amongst the highest in the world, with estimates ranging from 30-70% of the general population. Up to 30% of these are high myopes.
- Conditions
- Myopia, Maculopathy, Glaucoma
- Trial name
- NCT00347451
- Where
- Singapore
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Singapore National Eye Centre
Refractive Errors, Myopia
Evaluation of Delefilcon A Contact Lenses
The purpose of the study is to evaluate the lens fit characteristics of delefilcon A contact lenses with different base curves and diameters.
- Trial name
- NCT06884202
- Testing
- Delefilcon A contact lenses with different base curves and diameters, Delefilcon A contact lenses with standard base curves and diameters
- Where
- 16 sites in United States
- Volunteers
- 267 people
- Sponsor
- Alcon Research
Cataract, Corneal Astigmatism
Comparison of Toric IOL Implantation and Opposite Clear Corneal Incision During Cataract Surgery to Correct Corneal Astigmatism
With increasing demands of patients concerning refractive outcome after cataract surgery, toric intraocular lenses (IOLs) that correct corneal astigmatism have been introduced more widely to cataract surgery.
- Trial name
- NCT01763151
- Testing
- toric IOL, IOL combined with opposite clear corneal incision (OCCI)
- Where
- Austria
- Volunteers
- 55 people
- Sponsor
- Vienna Institute for Research in Ocular Surgery
Myopia
Increased Prevalence of Myopia in a Ophthalmologic Hospital in Goiânia - Goiás
The purpose of this study was to evaluate the increased prevalence of myopia among patients in different periods in an ophthalmologic hospital in Goiania.
- Trial name
- NCT02647411
- Volunteers
- 16,971 people
- Sponsor
- Instituto de Olhos de Goiania
Myopia
Analysis of I-Trace High Order Aberrations Induced by Wavefront Optimized Ablation Profiles
This work aims at the analysis of ocular aberrations induced by wave front optimized ablation profiles WFO using I-Trace aberrometer (Ray -Tracing)
- Trial name
- NCT04452448
- Testing
- LASIK
- Where
- Egypt
- Volunteers
- 10 people
- Sponsor
- Alexandria University
Myopia
Validation of a Predictive Algorithm to Determine the Effectiveness of Orthokeratology for Myopia Control
This is a prospective study to validate a predictive algorithm for identifying fast progressing myopes.
- Trial name
- NCT04275635
- Testing
- Orthokeratology lenses
- Where
- China
- Volunteers
- 3,000 people
- Sponsor
- Sun Yat-sen University
Myopia
Effects of Low-Level Red Light and Distant-Image Screen for Myopia Control in Children
This study aims to assess the efficacy and safety of daily exposure to 650-nm low-level red light (RL) and distant-image therapy (DIT) for myopia treatment.
- Trial name
- NCT06683287
- Testing
- red light and distant image screen, red light, distant image screen
- Where
- China
- Volunteers
- 120 people
- Sponsor
- Beijing Tongren Hospital
Child, Motor Activity
CHAMPS Eye Study - Myopia and Retinal Vascular Geometry in Relation to Physical Activity
An increasingly physical inactive lifestyle in the Western World has led to a higher number of lifestyle -related diseases. The consequences are now already present in childhood with an increased prevalence of overweight…
- Conditions
- Child, Motor Activity, Myopia
- Trial name
- NCT02346006
- Testing
- More physical activity.
- Volunteers
- 307 people, healthy volunteers welcome
- Sponsor
- Odense University Hospital
Refraction Error, Myopia
The MORE Study: Manifest vs. Online Refraction Evaluation
The assessment of the refractive state of the eye is a fundamental and important part of ophthalmic and optometric clinical practice.
- Conditions
- Refraction Error, Myopia, Astigmatism
- Trial name
- MORE (NCT03313921)
- Testing
- Online Manifest Refraction
- Where
- Netherlands
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- UMC Utrecht
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