Clinical trials: Error, Refractive
Myopia, Children
Atropine 0.01% Eyedrops for Evolutive Myopia Treatment in Children
Prevalence of myopia and its complications has been increasing over the past decades, especially among children and adolescents.
- Trial name
- NCT04252989
- Testing
- data collection
- Where
- France
- Volunteers
- 50 people
- Sponsor
- Centre Hospitalier Universitaire de Saint Etienne
Ametropia
Optimization of a Photoretinoscopy Method for Determining the Objective Refraction of Children With a Smartphone/add-on Device in India
The objective is to compare the refractive parameters of the photorefraction prototype device without cycloplegia with the refractive parameters of reference device, an autorefractometer with and without cycloplegia.
- Trial name
- NCT06524115
- Testing
- Comparator device, Closed-field autorefractometer without cycloplegia, Distance visual acuity check using objective refraction without cycloplegia, Comparator device, Closed-field autorefractometer with cycloplegia
- Where
- India
- Volunteers
- 122 people, healthy volunteers welcome
- Sponsor
- Essilor International
Presbyopia
Safety and Efficacy of an Intrastromal Transform™ Corneal Allograft (TCA) for Presbyopia Correction
The objective of this clinical study is to evaluate the safety and effectiveness of intrastromal implantation of the Allotex TransForm corneal allograft (TCA) for improving near vision in presbyopic subjects.
- Trial name
- NCT03671135
- Testing
- TCA Intrastromal Inlay
- Where
- 4 sites in Belgium, Ireland and 1 more
- Volunteers
- 121 people, healthy volunteers welcome
- Sponsor
- Allotex, Inc.
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.
Myopia, Refractive Error
Effect of Contact Lens Wear on Immune Cell Density and Morphology of the Ocular Surface
The purpose of this study is to utilize in-vivo confocal microscopy to describe differences in corneal epithelial immune status across three lens care regimens in new contact lens wearers.
- Trial name
- NCT01250925
- Testing
- ReNu MultiPlus® MultiPurpose Solution, OPTI-FREE® RepleniSH®, Clear Care®
- Where
- 2 sites in United States
- Volunteers
- 94 people, healthy volunteers welcome
- Sponsor
- Massachusetts Eye and Ear Infirmary
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
Conjunctivitis, Glaucoma
Feasibility Study and Preliminary Application Study on Iris OCTA
All participants will underwent imaging using the OCTA system (Zeiss) with the anterior segment optical adaptor lens. The main outcomes are iris blood flow density and vascular density.
- Conditions
- Conjunctivitis, Glaucoma, Myopia, Diabetic Retinopathy
- Trial name
- NCT03631108
- Testing
- OCTA (ZEISS)
- Volunteers
- 4,000 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Presbyopia Correction, Astigmatism
A Planned Study at Multiple Sites is Being Done to Compare the Results of Two Types of Trifocal Toric Intraocular Lenses Used in Cataract Surgery
To evaluate the clinical outcomes and patient satisfaction of two commercially available trifocal toric intraocular lenses Primary Objective: To compare the distance-corrected intermediate visual acuity between the two trifocal…
- Conditions
- Presbyopia Correction, Astigmatism, Cataract
- Trial name
- NCT07232615
- Testing
- Optiflex TRIO Intraocular Lens, AcrySof® IQ PanOptix®
- Where
- 6 sites in Germany, India and 1 more
- Volunteers
- 138 people
- Sponsor
- Biotech Healthcare Holding Gmbh
Myopia
the Clinical Performance of the Oxysoft Daily Disposable Silicone Hydrogel Soft Contact Lens
The objective of this study is to demonstrate that the OxySoft silicone hydrogel soft contact lens could be prescribed as a supportive care for myopes.
- Trial name
- NCT03934788
- Testing
- oxysoft (olifilcon C), Si-Hy (olifilcon B)
- Where
- 3 sites in Taiwan
- Volunteers
- 36 people
- Sponsor
- Visco Vision Inc.
Myopia
A Comparison of AIR OPTIX® COLORS Versus FRESHLOOK® COLORBLENDS
The purpose of this study was to evaluate the overall comfort of AIR OPTIX® COLORS compared to FRESHLOOK® COLORBLENDS in habitual wearers of the FRESHLOOK® COLORBLENDS .
- Trial name
- NCT01635933
- Testing
- Lotrafilcon B contact lens with color, Phemfilcon A contact lens with color
- Volunteers
- 370 people
- Sponsor
- Alcon Research
Presbyopia, Low Vision
Ocular Biomarkers for Successful Premium Trifocal Intra-ocular Lenses Implantation
The purpose of this study is to identify ocular biomarkers that can predict the success of phacoemulsification with bilateral AT LISA try 839MP (Carl Zeiss Meditec AG) implantation to achieve satisfactory post-post-operativly…
- Trial name
- NCT05863247
- Testing
- Patient Reported Outcomes / Biometric data revision
- Where
- Portugal
- Volunteers
- 154 people, healthy volunteers welcome
- Sponsor
- Hospital dos Lusíadas
Myopia
Acuity 200™ (Fluoroxyfocon A) Orthokeratology Contact Lens for Overnight Wear
The objective of this clinical investigation is to collect scientifically valid safety and effectiveness data on the Acuity 200™ (fluoroxyfocon A) Orthokeratology Contact Lens for Overnight Wear.
- Trial name
- Acuity200OK (NCT06009458)
- Testing
- Acuity 200™ (fluoroxyfocon A) Orthokeratology Contact Lens for Overnight Wear
- Where
- 13 sites in United States, Australia and 1 more
- Volunteers
- 387 people
- Sponsor
- Acuity Polymers, Inc.
Myopia
A 6-Hour Clinical Evaluation of New Daily-Wear Soft Contact Lenses
The purpose of this study is to validate the clinical performance of a new contact lens design when worn over a period of 6 hours compared to nelfilcon A (control).
- Trial name
- NCT03235089
- Testing
- Test Lens, Control Lens
- Where
- United States
- Volunteers
- 31 people
- Sponsor
- CooperVision, Inc.
Myopia, Progressive, Refractive Errors
Repeated Low-Level Red-Light Therapy and Orthokeratology in Fast-progressing Myopia Control
The purpose of this multicenter randomized clinical trial is to evaluate the adjunctive effect of repeated low-level red-light therapy (RLRL) and orthokeratology (ortho-k) on myopia control in ortho-k non-responders who have…
- Conditions
- Myopia, Progressive, Refractive Errors, Eye Diseases
- Trial name
- NCT04722874
- Testing
- Ortho-k lenses, RLRL
- Where
- 3 sites in China
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Refractive Errors
Clinical Assessment of Two Reusable Silicone Hydrogel Contact Lenses
The purpose of this study is to compare the clinical performance of LID018869 soft contact with ACUVUE® OASYS with HYDRACLEAR® PLUS (AOHP) soft contact lenses over 30 days of daily wear.
- Trial name
- NCT05050578
- Testing
- Lehfilcon A contact lenses, Senofilcon A contact lenses, CLEAR CARE
- Where
- 10 sites in United States
- Volunteers
- 166 people
- Sponsor
- Alcon Research
Refractive Errors
Clinical Evaluation of a Daily Wear Monthly Replacement Silicone Hydrogel Lens
The purpose of this clinical study is to evaluate the safety and effectiveness of an investigational soft contact lens compared to a commercially available soft contact lens when worn for daily wear and replaced monthly.
- Trial name
- NCT04178720
- Testing
- Lehfilcon A contact lenses, Comfilcon A contact lenses, CLEAR CARE
- Where
- 8 sites in United States
- Volunteers
- 119 people
- Sponsor
- Alcon Research
Blindness,Visual Impairment, Refractive Error, Cataract, High Myopia, Aging
Shanghai Eye Study for Adults
Blindness and visual impairment severely impact the visual health and life quality of people, particularly the 2.566 million senior citizens aged at 65 and above in Shanghai.
- Trial name
- SESA (NCT03455478)
- Testing
- spectacles
- Where
- China
- Volunteers
- 1,000,000 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia
Fitting Evaluation of Hydrogel and Silicone Hydrogel Spherical Contact Lenses
This study aims to compare the short-term clinical performance of the three contact lenses (Methafilcon A IV, Ocufilcon B 1-day and Omafilcon A 1-day daily disposable).
- Trial name
- NCT03235115
- Testing
- Methafilcon A IV, Ocufilcon B, Omafilcon A
- Where
- United Kingdom
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Myopia
Evaluation Of One Silicone Hydrogel Contact Lens and Two Hydrogel Lenses in Daily Wear
To evaluate the comparative clinical performance of the fanfilcon A silicone hydrogel lens used in daily wear and to compare this with competitive hydrogel lens products.
- Trial name
- NCT04050618
- Testing
- fanfilcon A test lens, ocufilcon D control lens, etafilcon A control lens
- Where
- 6 sites in United States
- Volunteers
- 114 people
- Sponsor
- CooperVision, Inc.
Astigmatism
Comparison of Cross-cylinder and Conventional Photorefractive Keratectomy(PRK) in Correcting Medium-high Astigmatism
The purpose of this study is to determine whether cross-cylinder approach is more effective than routine method in laser correction of astigmatism.
- Trial name
- PRK (NCT00663923)
- Testing
- photorefractive keratectomy (PRK)
- Where
- Iran
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Tabriz University
The first 1,020 results can be paged through. Add a filter or change the sort order to reach the rest.