Clinical trials: Refractive Error - Myopia
Myopia, Astigmatism
Wavefront-guided PRK vs Wavefront-optimized PRK
The purpose of the study is to compare the results of PRKK surgery when using wavefront-guided excimer laser treatment compared to wavefront optimized excimer laser treatment in patients with nearsightedness with and without…
- Trial name
- NCT02091934
- Testing
- Wavefront-guided PRK, Wavefront-optimized PRK
- Where
- United States
- Volunteers
- 71 people, healthy volunteers welcome
- Sponsor
- Stanford University
Refractive Errors
Post-market Clinical Follow-up Study of Alcon PRECISION1™ Spherical and PRECISION1™ for Astigmatism Soft Contact Lenses
The purpose of this study is to assess long term performance and safety of verofilcon A soft contact lenses in a real-world setting in a population of 7 years or older having at least 1 year of verofilcon A (sphere or toric)…
- Trial name
- NCT06462456
- Testing
- Verofilcon A spherical soft contact lenses, Verofilcon A toric soft contact lenses
- Where
- 12 sites in United States
- Volunteers
- 140 people
- Sponsor
- Alcon Research
Myopia
BIOCLEAN MPS (Multi-Purpose Solution) VII in Combination With Biofinity Lens: A Two Week Crossover Study
Two week, Open Label, randomized, bilateral, crossover, 1 week of daily wear in each combination (lens / disinfecting cleaning system).
- Trial name
- NCT02537730
- Testing
- Bioclean MPS VII, Aosept Clearcare, comfilcon A
- Where
- 3 sites in Japan
- Volunteers
- 33 people
- Sponsor
- CooperVision, Inc.
Myopia, Refractive Error
Comparative Study of Cycloplegic Refraction and Subjective Refraction With Fogging in School Age Children
A thorough ophthalmic examination of a child must include a refraction and this is often done with cycloplegia. In our study, we aim to determine at which age group a non-cycloplegic refraction technique closely correlates with a…
- Trial name
- NCT00347347
- Where
- Singapore
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Singapore National Eye Centre
Refractive Error
WaveLight® Refractive Flap Accuracy Study
The purpose of this study is to evaluate the accuracy of the WaveLight FS200 femtosecond laser, as assessed by 1 day and 1 month post-operative optical coherence tomography (OCT) anterior segment corneal measurements compared to…
- Trial name
- NCT01941485
- Testing
- WaveLight® Refractive Suite, LASIK surgery
- Volunteers
- 60 people
- Sponsor
- Alcon Research
Myopia
Study Comparing Eye Growth Over Time in Children Using Two Myopia Control Lenses
The goal of this clinical trial is to investigate the short-term changes in the eye structure while wearing two types of lenslet-based myopia control lenses over a period of 6 months in children aged 6 to 13 years with myopia.
- Trial name
- NCT07253064
- Testing
- MCL 1, MCL 2
- Where
- Singapore
- Volunteers
- 20 people
- Sponsor
- Essilor International
Myopia, Myopia Progression
Effect of Diffusion Optics Technology (DOT) Spectacle Lenses on Choroidal Thickness
The objective of the study is to measure the effect of Diffusion Optics Technology (DOT) spectacle lenses on the choroidal thickness and choroidal vascularity index compared to control lenses.
- Conditions
- Myopia, Myopia Progression, Juvenile Myopia
- Trial name
- ASH-2 (NCT05617794)
- Testing
- Diffusion Optics Technology (DOT) Pattern Spectacle Lens, Control Spectacle Lens
- Where
- Canada
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- SightGlass Vision, Inc.
Nearsightedness, Farsightedness
An Evaluation of LASIK, SMILE and PRK Surgery in Physicians
The principle investigator is evaluating self-reported quality of vision and quality of life in physicians undergoing LASIK, SMILE and PRK surgery.
- Conditions
- Nearsightedness, Farsightedness, Astigmatism
- Trial name
- NCT02576483
- Testing
- Questionnaire (QoV questionnaire)
- Where
- United States
- Volunteers
- 700 people, healthy volunteers welcome
- Sponsor
- Stanford University
Myopia
Efficacy and Influencing Factors of Repeated Low-level Red-light in Myopia
To evaluate the long-term efficacy of repeated low-level red-light (RLRL) therapy in the prevention and control of myopia in children, and to analyze the key factors influencing its efficacy (such as individual differences and…
- Trial name
- RLRL (NCT07104513)
- Testing
- Red Light
- Where
- 2 sites in China
- Volunteers
- 3,000 people, healthy volunteers welcome
- Sponsor
- Ruihua Wei
Asthenopia, Myopia
The Impact of Soft Contact Lens Attributes on Symptoms Associated With Digital Eye Strain in Symptomatic Soft Contact Lens Wearers
Despite its prevalence, the ocular causes of eye fatigue or unknown and may be related to the cornea/contact lens surface, the accommodative system, the convergence system, overall postural/muscle fatigue, or a combination of…
- Trial name
- NCT03585790
- Testing
- Contact lens with Multifocal Optics, Contact lens with Single Vision Optics
- Where
- United States
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- Pete Kollbaum, OD, PhD
Myopia
Delaying the Onset of Nearsightedness Until Treatment Study
Participants eligible for the study will be randomized to one of three concentrations of atropine and followed for a month.
- Trial name
- DONUT (NCT06029530)
- Testing
- Atropine Ophthalmic
- Volunteers
- healthy volunteers welcome
- Sponsor
- Ohio State University
Posterior Chamber Phakic Intraocular Lens, Vault
Study on the Diagnostic Efficacy of ICL Selection and Prediction Depth Model Based on Eye Images
To evaluate the diagnostic efficacy of deep learning network model in implantable collamer lens selection and prediction in a multicenter cross-sectional study
- Conditions
- Posterior Chamber Phakic Intraocular Lens, Vault, Deep Neural Network, Myopia
- Trial name
- NCT06669728
- Testing
- AI diagnostic algorithm
- Where
- China
- Volunteers
- 326 people, healthy volunteers welcome
- Sponsor
- Second Affiliated Hospital of Nanchang University
Myopia
Influence of Corneal Biomechanical Properties on Myopia Control
to analyze the changes in corneal biomechanics of myopic children with different treatment (low concentration atropine eye drops and orthokeratology) and explore the possible mechanism of myopia control
- Trial name
- NCT05090592
- Testing
- orthokeratology, 0.01 atropine
- Where
- Taiwan
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Buddhist Tzu Chi General Hospital
Myopia, Astigmatism
An Outcomes Study Comparing the Intralase FS 60 to the Intralase iFS When Performing LASIK Surgery for Nearsightedness
The purpose of the study is to compare the results of LASIK surgery when using two versions of a femtosecond laser in patients with nearsightedness with and without astigmatism.
- Trial name
- NCT01365728
- Testing
- LASIK with the iFS femtosecond laser
- Where
- United States
- Volunteers
- 61 people, healthy volunteers welcome
- Sponsor
- Stanford University
Ametropia
Study of Soft Contact Lens Use With 7 Day Extended Wear
To compare the safety and efficacy of the CVI silicone-hydrogel lens worn on an extended wear basis for a period of up to 7 days and 6 nights with the Acuvue 2 soft contact lenses.
- Trial name
- NCT00597467
- Testing
- VISA (comfilcon A) Silicone Hydrogel Soft contact lens, Acuvue 2 Soft Contact Lens
- Where
- 23 sites in United States
- Volunteers
- 460 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Presbyopia, Near Vision
Phase 3 Efficacy Study of LNZ100 & LNZ101 for the Treatment of Presbyopia
Phase 3 Efficacy Study to evaluate the Safety and Efficacy of LNZ100 \& LNZ101 for the Treatment of Presbyopia
- Conditions
- Presbyopia, Near Vision, Refractive Error, Eye Diseases
- Trial name
- CLARITY 2 (NCT05728944)
- Testing
- Aceclidine+Brimonidine combination ophthalmic solution, Aceclidine ophthalmic solution, Vehicle
- Where
- 17 sites in United States
- Volunteers
- 229 people, healthy volunteers welcome
- Sponsor
- LENZ Therapeutics, Inc
Myopia
Fitting Evaluation of Hydrogel and Silicone Hydrogel Sphere Design Contact Lenses
The aim of this non-dispensing fitting study is to evaluate the short term lens fit, vision performance of three monthly replacement sphere lenses.
- Trial name
- NCT03098745
- Testing
- Omafilcon A, Somofilcon A, Omafilcon A - Proclear (PC)
- Where
- Mexico
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Choroidal Neovascularization, Degenerative Myopia
Bevicizumab (Avastin) Infusion for Choroidal Neovascularization (CNV) Not Associated With Age-Related Macular Degeneration (AMD)
The purpose of this study is to see if the drug bevacizumab is safe and effective to use for people with choroidal neovascularization (CNV).
- Conditions
- Choroidal Neovascularization, Degenerative Myopia, Pathological Myopia
- Trial name
- NCT00407719
- Testing
- Bevacizumab
- Volunteers
- 10 people
- Sponsor
- Johns Hopkins University
Myopia
Cambridge Anti-Myopia Trial: Accommodation Training and Aberration Control in Myopia Development
We have identified focussing problems related to myopia getting worse. Our trial uses optical and orthoptic interventions that correct the focussing problems to see if this retards myopia progression.
- Trial name
- NCT00317551
- Testing
- Aberration controlled contact lens, Vision training
- Where
- United Kingdom
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Anglia Ruskin University
Myopia
Prospective Evaluation of Radial Keratotomy (PERK) Study
To determine whether radial keratotomy is effective in reducing myopia. To detect complications of the surgery. To discover patient characteristics and surgical factors affecting the results.
- Trial name
- NCT00000129
- Testing
- Radial Keratotomy
- Sponsor
- National Eye Institute (NEI)
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