Clinical trials: Refractive Error
Refractive Errors
Retrospective Study of the Health Benefits of Ultra-Violet Filtering Contact Lenses
The purpose of this study is to examine the long term effect of ultra-violet filtering contact lenses on macular pigment density (MPOD) and accommodative function.
- Trial name
- NCT01444053
- Testing
- No Intervention
- Where
- United Kingdom
- Volunteers
- 41 people
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Aphakia, Corneal Astigmatism
Clareon Toric Study (T2-T9)
The purpose of this post-market study is to describe the long-term safety and performance of Clareon Toric Intraocular Lenses (IOLs).
- Trial name
- NCT06285695
- Testing
- Clareon Toric IOL, Cataract surgery
- Where
- 6 sites in Canada
- Volunteers
- 129 people
- Sponsor
- Alcon Research
Myopia, Dry Eye
Effect of Contact Lenses on Tear Osmolarity in a Controlled Low Humidity Chamber
The purpose of this study is to evaluate two different types of contact lenses and their effect on dry eyes when compared to wearing glasses in a controlled, low humidity chamber.
- Trial name
- NCT01482312
- Testing
- lotrafilcon A contact lenses, comfilcon A contact lenses, Glasses
- Where
- Canada
- Volunteers
- 29 people
- Sponsor
- CIBA VISION
Myopia, Astigmatism
Daily Disposable Toric Comparative Trial in Europe
The purpose of this study is to investigate the subjective and objective performance of two daily disposable lenses for wearers with astigmatism.
- Trial name
- NCT01070381
- Testing
- nelfilcon A contact lens, ocufilcon D contact lens
- Volunteers
- 220 people
- Sponsor
- CIBA VISION
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
Zhaoqing Myopia Study
Myopia is a common cause of vision loss, being particularly prevalent in children in East and Southeast Asia. The investigators will assess prevalence and incidence of myopia, identify digital biomarkers associated with myopia…
- Trial name
- NCT04219228
- Testing
- Ophthalmic examinations, Wearable devices
- Where
- 2 sites in China
- Volunteers
- 4,000 people, healthy volunteers welcome
- Sponsor
- Sun Yat-sen University
Scoliosis Idiopathic, Myopia
Zhejiang Adolescent Spine and Vision Health Cohort: A Longitudinal Database Analysis
The aim of study: 1. To investigate the prevalence of scoliosis, other spinal deformities, myopia, and visual impairments in adolescents (aged 6-18) in Zhejiang Province.
- Conditions
- Scoliosis Idiopathic, Myopia, Vision Disorders
- Trial name
- NCT06992622
- Where
- China
- Volunteers
- 73,000 people
- Sponsor
- Second Affiliated Hospital of Wenzhou Medical University
Myopia, Healthy
Proteomic Analysis on Myopic Children Using Orthokeratology Lenses With Good or Poor Myopic Control
The key objective of the study is to gain an understanding of the biochemical processes that contribute to orthokeratology lenses being more effective in specific individuals compared to others.
- Conditions
- Myopia, Healthy, Orthokeratology
- Trial name
- ProMOC (NCT06647472)
- Where
- Denmark
- Volunteers
- 20 people
- Sponsor
- Vejle Hospital
Myopia, Astigmatism
Z8 OCT-controlled 2D vs 3D LASIK
The aim of this study was to test the hypothesis that OCT-guided 110 µm targeted flaps will result in accurate, predictable, and precise thickness flaps, with low complication rates when performed and compared using both 2D and…
- Trial name
- NCT04426175
- Testing
- 2D and 3D cutting method using a low energy Femtosecond laser LDV Z8 for LASIK flap cutting
- Where
- Germany
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- Zentrumsehstarke Hamburg
Astigmatism, Ametropia
Optimization for Toric Contact Lenses
The aim of this study is to evaluate the agreement between subjective and objective toric lens prescriptions.
- Trial name
- NCT07557030
- Testing
- Lens 1 ( stenfilcon A ), Lens 2 ( comfilcon A )
- Where
- United States
- Volunteers
- 29 people
- Sponsor
- CooperVision International Limited (CVIL)
Presbyopia
Comparison of Two Soft Bifocal Contact Lenses
The purpose of the study is to compare the visual performance of two soft bifocal contact lenses.
- Trial name
- NCT00724945
- Testing
- balafilcon A, senofilcon A
- Where
- 6 sites in United States
- Volunteers
- 113 people
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Refractive Error
Corneal Staining Associated With Daily Disposable Beauty Contact Lenses
Limbal ring contact lenses enhance the look of the eye by adding pigmentation in a ring pattern to the contact lens. The purpose of this investigation is to determine if corneal staining increase is dependent upon the lens…
- Trial name
- NCT01882465
- Testing
- etafilcon A, 2-HEMA, EGDMA Non-ionic, hefilcon A
- Where
- Hong Kong
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Cataract, Presbyopia
Visual Results of the Acrysof IQ Vivity Toric Extended Vision Intraocular Lens
The main goal of this study is to evaluate real-world visual outcomes, rotational stability, and patient reported visual disturbances with a non-diffractive extended vision presbyopia and astigmatism correcting intraocular lens…
- Conditions
- Cataract, Presbyopia, Corneal Astigmatism
- Trial name
- NCT04652037
- Testing
- Acrysof IQ Vivity Toric Extended Vision Intraocular Lens Implantation
- Where
- Canada
- Volunteers
- 20 people
- Sponsor
- Centre hospitalier de l'Université de Montréal (CHUM)
Refractive Errors
Clinical and Refractive Outcomes After Contoura® Refractive Surgery Planned Using Phorcides Surgery Planning Software
The objective of the current study is to prospectively evaluate 3-month clinical outcomes from LASIK performed using the Phorcides surgical planning software with Contoura topography-guided ablation in both eyes of subjects with…
- Trial name
- NCT04495829
- Testing
- Phorcides Analytical Engine
- Where
- 5 sites in United States
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- American Corneal Consultants
Scleral Lens Wearers
Efficacy of Scleral Contact Lenses for Daily Wear for Regular and Irregular Refractive Errors Compared to Habitually Worn Scleral Lenses
This study will be done with subjects who already habitually wear scleral contact lenses. The study lens is made with a material that is already widely available and has a new design.
- Trial name
- NCT02643095
- Testing
- scleral contact lens
- Volunteers
- 22 people
- Sponsor
- Jennifer Fogt
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
Myopia
Myopia:the Role of Cone Opsin Mutations & Glasses That Control Axial Elongation
1. To determine the effect of spectacles with a red blocking filter on myopia progression in children. 2. To determine the effect of spectacles with a holographic diffuser that spreads incident light rays over an angle of 0.5…
- Trial name
- NCT01923675
- Testing
- Spectacles with red-blocking tint, Spectacles with holographic diffuser and color neutral tint, Spectacles with holographic diffuser and red-blocking tint
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Washington
Refractive Error
Clinical Assessment of DAILIES TOTAL1® (DT1) Multifocal
The purpose of this study is to evaluate DAILIES TOTAL1® Multifocal (DTl MF) contact lenses in current multifocal contact lens wearers with symptoms of end of day discomfort compared to their habitual multifocal contact lens…
- Trial name
- NCT02871375
- Testing
- Delefilcon A multifocal contact lenses, Habitual multifocal contact lenses
- Volunteers
- 170 people
- Sponsor
- Alcon, a Novartis Company
Myopia
Clinical Evaluation of the Safety and Efficacy of Yung Sheng 55 % Color Contact Lens
This was a single group, open-label clinical study to assess the safety and efficacy of Yung Sheng 55% Color Contact Lens for vision correction.
- Trial name
- NCT06128486
- Testing
- Soft Contact Lens
- Volunteers
- 62 people
- Sponsor
- Yung Sheng Optical Co., Ltd.
Myopia
Pilot Study on the Adaptation and Tolerance of Essilor® Myopia-control Spectacle Lenses
This observational pilot study aims to evaluate the adaptation and tolerance of Essilor® Stellest® myopia-control spectacle lenses in children with progressive myopia.
- Trial name
- STELLAR (NCT07340931)
- Where
- France
- Volunteers
- 50 people
- Sponsor
- Nantes University Hospital