Clinical trials: Refractive Error
Cataract, Lens Opacities
A Comparison of FineVision Intraocular Lenses vs Symfony Intraocular Lenses
This is a prospective randomised open-label study with the aim to compare the visual performance of the trifocal FineVision® IOL versus the extended range of vision Symfony® IOL after phaco-emulsification cataract surgery.
- Conditions
- Cataract, Lens Opacities, Presbyopia
- Trial name
- NCT03974451
- Testing
- IOL implantation experimental, IOL implantation active comparator
- Where
- Egypt
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Beaver-Visitec International, Inc.
Myopia: Refractive Error
Evaluation of Novel Spectacles Intended for Myopia Management in a Short-Term Study
The primary objective of this study is to evaluate the visual acuity, wearability, and quality of vision with two novel multifocal glasses designs in habitual myopia control glasses wearers, in a non-dispensing study after…
- Trial name
- NCT07497672
- Testing
- Habitual myopia glasses, Myopia Glasses A, Myopia Glasses B
- Volunteers
- 20 people
- Sponsor
- Myoptechs, Inc
Myopia
Examination of Myopia Progression and Soft Bifocal Contact Lens Myopia Control
This project intends to provide important, previously unmet answers regarding biological associations with myopia (nearsightedness) progression in order to improve the ability to predict patients who are most likely to benefit…
- Trial name
- BLINK2 (NCT04080128)
- Testing
- Contact lenses
- Where
- 2 sites in United States
- Volunteers
- 248 people, healthy volunteers welcome
- Sponsor
- Ohio State University
Myopia
Myopic Control for High Myopes Using Orthokeratology
The purpose of this study is to evaluate and compare the eyeball elongation in high myopic children using partial correction orthokeratology and single-vision spectacles.
- Trial name
- HM-PRO (NCT00977236)
- Testing
- Orthokeratology lenses, Single-vision spectacle lenses
- Where
- China
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
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 Correction
Clinical Outcomes of the Use of a Femtosecond Laser on an Implanted Intraocular Lens
This is a prospective non-randomized patient controlled single center study which is designed to evaluate the clinical outcomes of the treatment of an implanted intraocular lens using a low-energy femtosecond laser for refractive…
- Trial name
- NCT07473557
- Testing
- Device
- Where
- Panama
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Perfect Lens, LLC
Myopia, Astigmatism
Safety and Efficacy Evaluation of a New Contact Lens Disinfecting Solution in Gas Permeable Contact Lens Wearers
The purpose of this study is demonstrate substantial equivalence of an investigational contact lens disinfecting solution to a commercially available contact lens solution in gas permeable lens wearers.
- Conditions
- Myopia, Astigmatism, Hyperopia, Refractive Error
- Trial name
- NCT01912781
- Testing
- FID 120947A contact lens disinfecting solution, Boston Simplus multi-action solution, Gas permeable contact lenses
- Volunteers
- 112 people
- Sponsor
- Alcon Research
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.
Pseudophakia, Refractive Error
IOL Power Formula Prediction Accuracy at the Extremes of Axial Length: A Prospective Outcome Verification Study
This single-center, prospective, cross-sectional study evaluates how accurately eight modern intraocular lens (IOL) power calculation formulas predicted the postoperative refractive result in eyes with extreme axial length after…
- Trial name
- FORMULEX-OV (NCT07724795)
- Testing
- Standardized postoperative outcome visit
- Where
- Austria
- Volunteers
- 200 people
- Sponsor
- Vienna Hospital Association
MYOPIA
Myopia Adjustment Using Dual-intervention: Red-Light Therapy & Innovative Design in Orthokeratology
This clinical trial investigates the efficacy of combining orthokeratology (OK) lenses with repeated low-level red-light (R.L.R.L.) therapy in slowing the progression of myopia in children classified as ortho-k non-responders.
- Trial name
- MADRID (NCT06899139)
- Testing
- Orthokeratology Lens Wear, Repeated Low-Level Red-Light Therapy Intervention Type: Device Description: Participants in the experimental group will receive repeated low-level red-light (R.L.R.L.) therapy twice daily using a no
- Where
- Spain
- Volunteers
- 20 people
- Sponsor
- Centro de Miopía Fernández-Velázquez
Presbyopia
A Clinical Trial to Evaluate the Safety and Effectiveness of the Raindrop Near Vision Inlay for Pseudophakic Subjects
The objective of this study is to evaluate the safety and effectiveness of the Raindrop Near Vision Inlay implanted in bilateral pseudophakes with presbyopia for improvement of near and intermediate vision.
- Trial name
- NCT03017612
- Testing
- Raindrop Near Vision Inlay
- Where
- 6 sites in United States
- Volunteers
- 13 people
- Sponsor
- ReVision Optics, Inc.
Myopia
Myopia Progression and the Effect of 7-Methylxanthine
7-methylxanthine has been shown to increase the concentration and thickness of collagen fibrils in rabbit sclera. Deficient collagen in the sclera may be the cause of progression of childhood myopia.
- Trial name
- NCT00263471
- Testing
- 7-methylxanthine
- Volunteers
- 90 people
- Sponsor
- Trier Research Laboratories
Myopia
Atropine for Children and Adolescent Myopia Progression Study
Investigators are going to conduct a randomized controlled trial that myopic children are randomly allocated into two groups: combined use of 1% atropine and 0.01% atropine (experimental group) and 0.01% atropine (control group)…
- Trial name
- NCT03949101
- Testing
- Atropine Sulfate 1 % Ophthalmic Ointment and Atropine Sulfate 0.01% Eye Drop, atropine 0.01% eye drop
- Where
- China
- Volunteers
- 222 people
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia
Topical Application of Low-concentration (0.01%) Atropine on the Human Eye With Fast and Slow Myopia Progression Rate
Our project is a 24-month longitudinal randomized controlled trial that aims to investigate the myopia development after topical application of 0.01% atropine in children with either fast or slow myopia progression classified…
- Trial name
- NCT03374306
- Testing
- Atropine (0.01%), Artificial tear
- Where
- Hong Kong
- Volunteers
- 71 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Myopia, Refractive Error - Myopia
Minimum Power and Frequency of Repeated Low-level Red-light to Effectively Control Myopia Progression
To explore the minimum power and frequency of Repeated Low-level Red-light (RLRL) to control myopia progression in low-myopic children aged 8-10 years, and the rebound effect of low-myopic children after discontinuation of RLRL…
- Conditions
- Myopia, Refractive Error - Myopia, Choroidal Thickness, Retina
- Trial name
- NCT06717048
- Testing
- Repeated Low-level Red-light, Red LED
- Where
- China
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia
Combination Effect of Optical Defocus and Low Dose Atropine in Myopia Control
The purpose of the study is to investigate the combination effect of optical defocus and low dose atropine on myopia control in schoolchildren.
- Trial name
- NCT06358755
- Testing
- Defocus Incorporated Multiple Segments lenses, single vision spectacle lenses, Low dose atropine
- Where
- Hong Kong
- Volunteers
- 112 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Myopia, Refractive Errors
School-based Myopia Control Trial for Children With Premyopia or Myopia
This is a prospective, school-based randomized controlled trial designed to evaluate auricular acupressure combined with defocus spectacle lenses for myopia control in primary school students with premyopia or myopia.
- Trial name
- SPARK (NCT07746778)
- Testing
- Defocus Spectacle Lenses, Auricular Acupressure
- Where
- China
- Volunteers
- 358 people
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia
A Multi-center Study of the Effect of Orthokeratology on Myopia Progression
This is a prospective study to validate an algorithm for predicting the effect of orthokeratology on myopia progression in children from 8 hospitals in China.
- Trial name
- NCT04284111
- Testing
- Orthokeratology lenses
- Where
- 8 sites in China
- Volunteers
- 1,000 people
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Myopia
Evaluation of Stenfilcon A Versus Etafilcon A
Evaluation of two contact lenses
- Trial name
- NCT01809834
- Testing
- Etafilcon A, Stenfilcon A
- Where
- Canada
- Volunteers
- 46 people
- Sponsor
- CooperVision, Inc.
Myopia (Disorder), Anisometropia
Children Receiving Monocular MiSight® 1 Day Treatment for Unilateral Myopia
This investigator-initiated prospective observational cohort study aims to establish the first longitudinal clinical database evaluating fellow-eye myopia development in children receiving monocular MiSight® 1 Day treatment for…
- Trial name
- NCT07778264
- Testing
- MiSight® 1 Day
- Volunteers
- 100 people
- Sponsor
- Buddhist Tzu Chi General Hospital