Clinical trials: Refractive Error
Retinopathy of Prematurity (ROP), Prematurity Complications
Retinopathy of Prematurity - Visual Function and Retinal Structure
Children born prematurely may develop a characteristic retinal disease named retinopathy of prematurity (ROP). This disease could lead to retinal detachment and blindness.
- Conditions
- Retinopathy of Prematurity (ROP), Prematurity Complications, Cerebral Visual Impairment, Visual Field Defect
- Trial name
- NCT07427719
- Where
- Norway
- Volunteers
- 140 people
- Sponsor
- Oslo University Hospital
Refractive Error
Ocular Comfort and the "Aging" Lens (ERBIUM)
The purpose of this trial was to evaluate the factors affecting comfortable contact lens wear and how those factors affect contact lens replacement frequency.
- Trial name
- NCT01198600
- Testing
- Habitual contact lens, Lotrafilcon B contact lens, Contact lens cleaning and disinfecting system (ClearCare)
- Where
- Canada
- Volunteers
- 78 people
- Sponsor
- CIBA VISION
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
Nearsightedness, Near Sightedness
The Safety and Efficacy of SYD-101 in Children With Myopia
Myopia, or nearsightedness, is the most common eye disorder, often affecting more than 40% of adults in Europe, Asia and the USA.
- Conditions
- Nearsightedness, Near Sightedness, Near-sightedness
- Trial name
- STAR (NCT03918915)
- Testing
- SYD-101 0.01%, SYD-101 0.03%, Vehicle
- Where
- 47 sites in United States, Austria and 1 more
- Volunteers
- 852 people
- Sponsor
- Sydnexis, Inc.
Myopia
Comparing Relative Peripheral Refraction on Myopia Progression
The investigators will test our hypothesis that parameters on peripheral defocus can regulate eye growth: For instance, the relative peripheral refraction measured by Multispectral Refraction Topography (MRT) would be significant…
- Trial name
- CMPMRT (NCT06758843)
- Testing
- measure the axial length, visual acuity, and refraction at follow-up of 6- and 12-month
- Where
- China
- Volunteers
- 6,000 people, healthy volunteers welcome
- Sponsor
- Fuzhou Southeast Institute of Visual Ophthalmology
Myopia
Clinical Trial of Orthokeratology Lens (MCOK-01)
A prospective, multicenter, randomized, controlled clinical trial of orthokeratology lens
- Trial name
- NCT06037850
- Testing
- Test orthokeratology lens, Control orthokeratology lens
- Where
- 3 sites in Singapore
- Volunteers
- 390 people, healthy volunteers welcome
- Sponsor
- Menicon Co., Ltd.
Myopia
WEAR (Wearability and Evaluation of Adjustable Refraction) III
Two-month randomized trial comparing three groups.
- Trial name
- WEARIII (NCT02529540)
- Testing
- Adjustable glasses, Custom standard glasses, Ready-made glasses
- Volunteers
- 324 people
- Sponsor
- Sun Yat-sen University
Myopia, Hyperopia
High Refractive Index Material 510(k)
The purpose of this study is to establish the substantial equivalence of the HDS HI 1.54™ to the paflufocon C material control lenses to correct myopia and hyperopia with and without astigmatism.
- Trial name
- PVS-07-07 (NCT00766168)
- Testing
- HDS HI 1.54; pahrifocon A, FluoroPerm 30 RGP; paflufocon C
- Where
- 8 sites in United States
- Volunteers
- 76 people, healthy volunteers welcome
- Sponsor
- CooperVision International Limited (CVIL)
High Myopia, Refractive Errors
Repeated Low-Level Red-Light Therapy for Shortening Axial Length
The purpose of this clinical trial is to confirm the incidence and magnitude of axial length shortening after RLRL therapy in Chinese high myopia children and teenagers.
- Conditions
- High Myopia, Refractive Errors, Eye Diseases
- Trial name
- NCT05550740
- Testing
- RLRL
- Where
- China
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Cornea; Ectasia, Refractive Errors
Corneal Elastography and Patient Specific Modeling
The goal of this research is to develop measurement tools and simulation technology for characterizing and predicting individual responses to corneal treatments and for advancing understanding of corneal ectasia risk factors.
- Conditions
- Cornea; Ectasia, Refractive Errors, Keratoconus
- Trial name
- NCT03030755
- Testing
- Optical coherence tomography
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- The Cleveland Clinic
Myopia
Effect of Plum-blossom Needle vs. Tropicamide Eye Drops on Juvenile Myopia
The purpose of this study is to determine whether plum-blossom needle is effective in the treatment of juvenile myopia and compare the efficacy with Tropicamide Eye Drops.
- Trial name
- NCT03097198
- Testing
- Plum-blossom Needle, Tropicamide Eye Drops
- Where
- China
- Volunteers
- 98 people
- Sponsor
- Wenzhou Medical University
Refractive Errors
Consistency of an Automated Subjective Refraction Program Between Personnel With Diverse Professional Backgrounds and Senior Optometrists
This study aims to evaluate the performance of automated subjective refraction performed by operators with different professional backgrounds.
- Trial name
- NCT07891884
- Testing
- Nurse-Operated Automated Subjective Refraction, Village Doctor-Operated Automated Subjective Refraction, Lay Personnel-Operated Automated Subjective Refraction
- Volunteers
- 254 people, healthy volunteers welcome
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Refractive Errors
Investigating the Effect of Using Myopia Prediction Algorithm on Myopia Children
In this study, the investigators aim to perform a prospective, randomized controlled study to compare the myopia development between myopia children using myopia prediction algorithm and myopia children without using myopia…
- Trial name
- NCT04044755
- Testing
- Myopia prediction algorithm
- Where
- China
- Volunteers
- 2,138 people, healthy volunteers welcome
- Sponsor
- Sun Yat-sen University
Myopia
Efficacy of Multi-Type Photolithography Flat Microstructure Lenses for Childhood Myopia Control
The goal of this clinical trial is to learn if photolithographic flat microstructure lenses work to prevent myopia in children. It will also learn about the safety of different designs of photolithographic flat microstructure…
- Trial name
- NCT07535658
- Testing
- wearing photolithography plano microstructure lenses with multi-point defocus design, non-fading optical property, wearing Plano microstructure lenses featuring multi-point defocus design with aspherical lenslets (Essilor Stellest), wearing Photolithography Plano Microstructure Lenses incorporates a multi-point defocus optical architecture , featuring photochromic properties with a light transmittance of 55% post-activation
- Where
- China
- Volunteers
- 255 people
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia, Progressive
DIMS-myopia Progression ADN Axial Length Growth
To confirm the efficacy of DIMS lenses in controlling myopia progression, we planned a prospective randomized controlled clinical study.
- Trial name
- NCT05300321
- Testing
- frame lens
- Where
- China
- Volunteers
- 82 people, healthy volunteers welcome
- Sponsor
- Tianjin Eye Hospital
Myopia
Eye Length Signal With Myopia Control
Myopia, considered as a global epidemic, is rapidly rising in prevalence especially in east Asian countries. Younger ages are associated with greater annual progression and thus early onset myopia is likely to result in higher…
- Trial name
- NCT04813640
- Testing
- Spectacles
- Where
- Vietnam
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Brien Holden Vision Institute
Myopia, Conjunctivitis
Zanzibar Arts for Children's Eyesight Pilot Trial
In Zanzibar, around 22,000 children (4% of those aged 6 to 12) need treatment for eye issues like conjunctivitis or require glasses. A 2017 study found that 42% of rural children needing glasses didn't have them.
- Conditions
- Myopia, Conjunctivitis, Hyperopia
- Trial name
- ZANZI-ACEII (NCT06469697)
- Testing
- School music broadcast, Community music broadcast
- Where
- Tanzania
- Volunteers
- 1,295 people
- Sponsor
- Queen's University, Belfast
Myopia Progressing
Dynamic Pupil Variations and the Efficacy of Peripheral Defocus Spectacle Lenses in Slowing Myopia Progression
to evaluate the correlation between dynamic pupil variations and the efficacy of spectacle lenses in myopia progression control
- Trial name
- NCT07808047
- Testing
- perifheral defocus spectacle lenses, peripheral defocus spectacle lens
- Where
- Italy
- Volunteers
- 14 people
- Sponsor
- Bambino Gesù Hospital and Research Institute
Myopia
In-vivo Wettability Grading and Assessment Study
The purpose of this study is to investigate the front surface wettability of soft contact lenses while on eye.
- Trial name
- CIAN (NCT01010555)
- Testing
- lotrafilcon B, balafilcon A, senofilcon A
- Where
- Canada
- Volunteers
- 25 people
- Sponsor
- CIBA VISION
Myopia, Progressive
Atropine 0.01% Eye Drops in Myopia Study
Control of myopia progression has become an important goal because of concerns regarding significantly increased risks of retinal degeneration, retinal detachment, glaucoma and cataract associated with high myopia.
- Trial name
- AIMS (NCT03508817)
- Testing
- Atropine Sulfate 0.01% Eye Drops
- Where
- Oman
- Volunteers
- 150 people
- Sponsor
- Sultan Qaboos University