Clinical trials: Refractive Error
Myopia, Astigmatism
Toric Orthokeratology - Slowing Eye Elongation
The aims of this study are to investigate the effects of ortho-k for astigmatic and myopic reduction and myopic control in children, and the long term effects on corneal curvatures and biomechanics.
- Trial name
- TO-SEE (NCT00978692)
- Testing
- Toric Orthokeratology lenses, Single-vision spectacles
- Where
- China
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Cataract Congenital, Astigmatism
Toric Intraocular Lens Implantation in Pediatric Cataract
To evaluate the visual and refractive outcomes after an intraocular lens (IOL) implantation in pediatric eyes with cataract and preexisting corneal astigmatism
- Conditions
- Cataract Congenital, Astigmatism, IOL
- Trial name
- TILIPC (NCT06294795)
- Testing
- congenital/pediatric cataract surgery, Non-Toric IOLs, Toric IOLs
- Where
- 2 sites in Kazakhstan
- Volunteers
- 40 people
- Sponsor
- Kazakh Eye Research Institute
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
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
Surrgical Induced Astigmatism
Surgically Induced Astigmatism of Temporal Versus Nasal Clear Corneal Phacoemulsification
To compare the short-term astigmatic outcomes of phacoemulsification cataract surgery and intraocular lens implantation using temporal versus nasal clear corneal incisions.
- Trial name
- NCT00521833
- Testing
- phacoemulsification and intraocular lens implantation
- Where
- Iran
- Volunteers
- 20 people
- Sponsor
- Shahid Beheshti University of Medical Sciences
Myopia
Auricular Acupressure Reduces Rebound Effects After Discontinuation of Atropine
0.01% atropine is an effective measure for controlling myopia in children and is widely used in Asia for this purpose. However, there is a phenomenon of rebound and worsening of myopia after discontinuation of the medication.
- Trial name
- NCT07129889
- Testing
- gradual withdrawal of medication, Auricular acupressure
- Where
- China
- Volunteers
- 180 people
- Sponsor
- Ningbo Eye Hospital
Myopia, Quality of Life
Functional Vision and Quality of Life in a Modern Society - With Emphasis on Myopia and Cerebral Visual Impairment Among Youth
Society has become increasingly digital, and many everyday services have been replaced by digital self-service solutions. This puts greater demands on our vision and our ability to interpret what we see.
- Trial name
- NCT07653074
- Testing
- ophthalmological examination
- Where
- Sweden
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Region Örebro County
Myopia, Myopia Progression
Spectacle Lens Visual Acuity Assessments Study
This is a two-arm parallel group, non-dispensing study. Participants will be existing active CYPRESS Extension (CPRO-1802-002) subjects. Subjects will undergo additional visual performance assessments.
- Conditions
- Myopia, Myopia Progression, Juvenile Myopia
- Trial name
- CEDAR (NCT05650190)
- Testing
- Novel spectacle lens design, Spectacle lenses
- Where
- 6 sites in United States
- Volunteers
- 51 people, healthy volunteers welcome
- Sponsor
- SightGlass Vision, Inc.
Myopia
Spectacle Films Utilising S.T.O.P.® Technology for Slowing Down Myopia Progression in Children
There are two parts to this trial. First, to compare the rate of myopia progression of spectacle films using Spatio Temporal Optic Phase (S.T.O.P.®) technology that provide a dynamic optical cue against single vision spectacle…
- Trial name
- NCT06137560
- Testing
- Single vision spectacle lens, Single vision spectacle lens + S.T.O.P.® Kit 1, Single vision spectacle lens + S.T.O.P.® Kit 2
- Where
- 5 sites in China, India
- Volunteers
- 210 people
- Sponsor
- nthalmic Pty Ltd
Myopia
Efficacy of Myopia-control Lenses in a Population of Young Adults : the OPTIMA Study
The goal of this clinical trial is to learn if myopia-control eyeglass lenses (Essilor® Stellest® 2.0) can slow down the progression of short-sightedness (myopia) in young adults, compared with standard single-vision lenses.
- Trial name
- OPTIMA (NCT07804043)
- Testing
- Essilor® Stellest® 2.0 myopia-slowing lenses, Standard lenses
- Where
- France
- Volunteers
- 134 people
- Sponsor
- Fondation Ophtalmologique Adolphe de Rothschild
Myopia
Visual Performance of Highly Aspherical Lenslet Spectacles in Children (Ancillary to WS10246)
To evaluate the visual performance of (high and low contrast distance visual acuity, reading speed, near visual acuity, and near contrast sensitivity) of HAL spectacle lenses (habitual correction) in comparison with single vision…
- Trial name
- FIN-3102 (NCT07668102)
- Testing
- HAL spectacle lens, Single Vision spectacle lens
- Where
- 7 sites in United States
- Volunteers
- 88 people
- Sponsor
- Essilor International
Myopia
Wearing Behavior and Eye Length Changes in Children With Myopia Wearing Myopia Control Spectacle Lenses
The goal of this clinical trial is to learn how children with myopia aged 8 to 15 years move their eyes and heads during near-vision tasks while wearing different spectacle lenses, and if wearing myopia control spectacle lenses…
- Trial name
- NCT07780851
- Testing
- Single Vision Lens (SVL), Myopia Control Lens (MCL)
- Where
- Singapore
- Volunteers
- 20 people
- Sponsor
- Essilor International
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
Myopia
Refitting Frequent Replacement Lens Wearers Into Clariti 1 Day And 1-Day Acuvue Moist Daily Disposable Spherical Lenses
The objective of the study is to evaluate and compare the performance of somofilcon A to etafilcon A when worn on a daily disposable wear modality over a period of approximately one week.
- Trial name
- NCT04195893
- Testing
- somofilcon A, etafilcon A
- Where
- Canada
- Volunteers
- 56 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Myopia
Myoslow Lens Study to Control Myopia in Children
A Prospective, randomized, controlled double masked trial to assess the performance of Myoslow lens in slowing myopia progression in children.
- Trial name
- NCT06553404
- Testing
- Myoslow, Single Vision
- Where
- Israel
- Volunteers
- 125 people
- Sponsor
- Crystal Optic
Myopia
A Controlled Evaluation of Optical Defocus Parameters on Transient Changes in Axial Length Using Kubota Glass
This study will assess the optimal performance characteristics of optical defocus on transient changes in axial length with Kubota Glass, using a randomized, double-masked, 5-treatment, 5-period crossover design with…
- Trial name
- NCT07686289
- Testing
- KG1, KG2, KG3
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Kubota Vision Inc.
Cerebral Visual Impairment, Refractive and Accommodative Disorders
Babies in Glasses; a Feasibility Study.
This is a feasibility study to begin investigating the possibility that early use of near vision glasses will improve vision in infants at risk of Cerebral Visual Impairment (CVI), leading to further improvement in other areas of…
- Conditions
- Cerebral Visual Impairment, Refractive and Accommodative Disorders, Hypoxic-Ischemic Encephalopathy, Premature Birth
- Trial name
- BiG (NCT05048550)
- Testing
- Near vision spectacles
- Where
- United Kingdom
- Volunteers
- 55 people
- Sponsor
- Great Ormond Street Hospital for Children NHS Foundation Trust
Myopia Progression
Orthokeratology Lens Decentration with Two Designs of Corneal Refractive Therapy™ Lenses: a One-year Prospective Study
Background/Objectives: To examine the trend of treatment zone (TZ) decentration over 12 months of Orthokeratology (OK) wear using two corneal refractive therapy (CRT) lens designs: standard (STD) and dual axis (DA).
- Trial name
- NCT06726499
- Testing
- Spherical CRT, Toric CRT
- Where
- Spain
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Universidad Complutense de Madrid
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
Juvenile Myopia, Myopia
CYPRESS Efficacy and Safety Study Extension
This is an open-label, controlled, multisite, two-arm parallel group clinical trial of 36-month duration to evaluate the continued safety and efficacy of SightGlass Vision Diffusion Optics Technology (DOT) Spectacles in reducing…
- Trial name
- CYPRESS (NCT04947735)
- Testing
- Novel spectacle lens design, Spectacle lenses
- Where
- 12 sites in United States, Canada
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- SightGlass Vision, Inc.