Clinical trials: Visual Perception
Vision Disorders
Modification in Cortical Activation in Pseudophakic Patients With Visual Difficulties After a Multifocal Implantation
This study will highlight differences in cortical activation between asymptomatic and symptomatic patients.
- Trial name
- PlainteIMF (NCT02529098)
- Testing
- fMRI
- Where
- France
- Volunteers
- healthy volunteers welcome
- Sponsor
- University Hospital, Toulouse
Cataract
Visual Outcomes After Implantation of a New Multifocal Intraocular Lens
This prospective nonrandomized study comprised patients with cataract, corneal astigmatism, and motivation for spectacle independence. In all cases, a Rayner M-flex® T toric Intraocular Lens will be implanted in the capsular bag.
- Trial name
- NCT01505816
- Testing
- Multifocal Intraocular Lens (RAYNER M-FLEX T TORIC IOL)
- Where
- Brazil
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Hospital Oftalmologico de Brasilia
Visual Fatigue
Evaluating the Effectiveness of Comfort Reading Mode in Preventing Dry Eyes and Visual Fatigue
The purpose of this study was to investigate the effects of visual fatigue and dry eye level under different reading background polarities and different text colours, and to evaluate the effect of comfortable reading mode on the…
- Trial name
- NCT07032909
- Testing
- comfortable reading mode
- Where
- China
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Beijing Tongren Hospital
Depressive Symptoms, Clinical Depression
Improving Mood in Assisted Living Settings
Late-life depression levels are escalating, and include 24% of all tenants of Assisted Living (AL) settings. A promising, novel intervention is a computerized visual speed of processing training program known as Road Tour.
- Trial name
- NCT01763216
- Testing
- Road Tour, Boatload of Crosswords
- Where
- 32 sites in United States
- Volunteers
- 351 people, healthy volunteers welcome
- Sponsor
- Marianne Smith
Glaucoma, Open-Angle
Visual Field Defect Estimation Using Sequentially Optimized Reconstruction Strategy on Healthy and Glaucoma Subjects
Perimetry is a well-established method that is used to measure the visual field functions of humans. Commercially available products, such as the OCTOPUS 900 (Haag-Streit AG, Koeniz, Switzerland), are commonly used for assessing…
- Trial name
- NCT03325751
- Testing
- Visual field testing
- Where
- Switzerland
- Volunteers
- 103 people, healthy volunteers welcome
- Sponsor
- Insel Gruppe AG, University Hospital Bern
Glaucoma, Open-Angle, Normal Tension Glaucoma
Investigation of Neurovascular Coupling in Glaucoma Patients and Healthy Subjects
Glaucoma is characterized by a progressive loss of retinal ganglion cells (RGCs) leading to optic nerve head (ONH) damage and associated visual field defects.
- Conditions
- Glaucoma, Open-Angle, Normal Tension Glaucoma, Ocular Hypertension
- Trial name
- NCT03870230
- Testing
- Fourier Domain Doppler Optical Coherence Tomography (FDOCT), Dynamic Vessel Analyzer (DVA), Pattern Electroretinography (pERG)
- Where
- Austria
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Glaucoma
Functional and Structural Imaging for Glaucoma
The specific aims of the clinical studies are to: Develop a directional high-resolution OCT and OCT angiography prototype to improve imaging of structure and perfusion.
- Trial name
- FSOCT (NCT01957267)
- Where
- United States
- Volunteers
- 249 people, healthy volunteers welcome
- Sponsor
- Oregon Health and Science University
CAD Test; Children's Vision; Colour Assessment; Colour Vision; Turkey
Prevalence and Severity of Colour Vision Deficiency Among Turkish Children
To evaluate the usability of the Colour Assessment and Diagnosis (CAD) test in children. To determine the prevalence of colour vision deficiency (CVD) among Turkish children, to identify the class of deficiency and to quanify…
- Trial name
- NCT04048499
- Testing
- the Colour Assessment and Diagnosis (CAD) test
- Where
- Turkey (Türkiye)
- Volunteers
- 1,374 people, healthy volunteers welcome
- Sponsor
- Medipol University
Macular Edema, Cystoid, Vision Disorders
Intraoperative Dexamethasone Implant Improves Outcome of Cataract Surgery With Diabetic Macular Edema
This study is undertaken to determine the effect of intravitreal long acting dexamethasone implant, (Ozurdex®) in improving outcome of cataract surgery in patients with diabetic macular edema.
- Conditions
- Macular Edema, Cystoid, Vision Disorders, Diabetic Macular Edema, Cystoid Macular Edema Following Cataract Surgery
- Trial name
- NCT01546402
- Testing
- Dexamethasone Drug delivery system (Ozurdex), Cataract surgery
- Where
- India
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Post Graduate Institute of Medical Education and Research, Chandigarh
Central Visual Impairment
Peripheral Reading
The purpose of this study is to evaluate reading performance in the visual periphery by simulating central vision loss using a computer-controlled gaze-contingent display with an eye tracker.
- Trial name
- NCT03640130
- Testing
- Gaze-contingent text enhancement
- Where
- United States
- Volunteers
- 6 people, healthy volunteers welcome
- Sponsor
- University of Houston
Bacterial Infections, Eye Infections
Study of AzaSite Versus Vigamox in the Tears of Healthy Volunteers
The purpose of this study is to evaluate the drug concentrations of AzaSite compared to Vigamox in tears of healthy volunteers
- Trial name
- NCT00575367
- Testing
- AzaSite (azithromycin ophthalmic solution), Vigamox (moxifloxacin hydrochloride ophthalmic solution)
- Where
- United States
- Volunteers
- 37 people, healthy volunteers welcome
- Sponsor
- Merck Sharp & Dohme LLC
Vision Satisfaction in Bright Light
ACUVUE® OASYS With Transitions™ Light Intelligent Technology™ Clinical Performance Registry
This registry study is a one-year, one-visit, observational, prospective, open-label, two-arm, multi-center, multi-national, post-market study of approximately 300 patients who have recently been fitted with the ACUVUE® OASYS…
- Trial name
- NCT04116736
- Testing
- ACUVUE® OASYS with Transitions™, Silicone Hydrogel Contact Lens
- Where
- 22 sites in Spain, United Kingdom
- Volunteers
- 146 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Glaucoma
Real-time Glaucoma Medication Adherence
This study will evaluate the effectiveness of real-time data collected on patients taking topical medication to treat glaucoma. Patients will be randomized to two groups, the first of which will only use the study device to take…
- Trial name
- NCT03194828
- Testing
- Medication reminder, Medication monitoring only
- Where
- 8 sites in United States
- Volunteers
- 5 people, healthy volunteers welcome
- Sponsor
- University of Tennessee
Refractive Error
Evaluation of Vision Effects of a Cosmetic Tinted Hydrogel Contact Lens
Subjects will wear 2 of 2 study contact lenses for a wearing time of approximately three to four hours at each of the visits in order to take measurements on binocular functional visual performance.
- Trial name
- NCT02886923
- Testing
- Hioxifilcon A Test, Hioxifilcon A With Cosmetic Ring Control
- Where
- United Kingdom
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Healthy
Efficacy and Tolerability of a Bilberry Extract in Volunteers With Impaired Twilight and Night Vision
Study to determine the efficacy of Anthocyan to improve impaired twilight and night vision and to test its tolerability and safety.
- Trial name
- NCT02194127
- Testing
- Anthocyan capsules
- Volunteers
- 195 people, healthy volunteers welcome
- Sponsor
- Boehringer Ingelheim
Visual Deficiencies
Exploration of the Role of Vision on Spatial Cognition
Atypical developpement of spatial cognition has been shown in congenital bindness with some consequences on mathematic learning (Cattaneo et al., 2010) as well as on the mental representation of spatial maps (Thinus-Blanc \&…
- Trial name
- SpatioCog (NCT06088797)
- Testing
- METRIC COMPARISON Tasks : Tactile PVSE test, METRIC COMPARISON Tasks : Classic PVSE test, Mental imagery task
- Where
- France
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Hospices Civils de Lyon
Ischemic Optic Neuropathy, Branch Retinal Artery Occlusion
New Non-invasive Modalities for Assessing Retinal Structure and Function
This study investigates a new technology to assess the structure and function inside the eye. Retinal imaging of subjects with inner and outer retinal defects to detect areas of abnormal structure and function compared to other…
- Conditions
- Ischemic Optic Neuropathy, Branch Retinal Artery Occlusion, Hemianopia, Leber Hereditary Optic Neuropathy
- Trial name
- NCT03475173
- Testing
- LSFG-NAVI
- Where
- United States
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- Randy Kardon
Parkinson Disease, Progressive Supranuclear Palsy
Early Biomarkers of Neurodegeneration in Parkinsonian Syndromes
Parkinson's disease (PD) is the most common degenerative Parkinson's syndrome and is linked, among other things, to the excessive accumulation of an abnormally aggregating protein, alpha-synuclein.
- Trial name
- SODIPARK (NCT06155942)
- Testing
- 7 Tesla MRI
- Where
- 6 sites in France
- Volunteers
- 63 people, healthy volunteers welcome
- Sponsor
- Assistance Publique Hopitaux De Marseille
Macular Holes, Epiretinal Membrane
Intraoperative OCT Guidance of Intraocular Surgery II
The overall five-year goals of the project are to develop novel technology to provide actionable new information through provision of live volumetric imaging during surgery, improving surgical practice and outcomes.
- Conditions
- Macular Holes, Epiretinal Membrane, Diabetic Retinopathy, Retinal Detachment
- Trial name
- MIOCT (NCT03713268)
- Testing
- Microscope integrated optical coherence tomography
- Where
- United States
- Volunteers
- 262 people, healthy volunteers welcome
- Sponsor
- Duke University
Subjects With Primary Open-angle Glaucoma (POAG)
Prospective Evaluation of Open-Angle Glaucoma Subjects on One Topical Hypotensive Medication Treated With Two iStents
The purpose of this study is to evaluate the intraocular pressure (IOP) lowering effect of two iStent devices in eyes of subjects with primary open-angle glaucoma
- Trial name
- NCT01252862
- Testing
- iStent
- Where
- Armenia
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Glaukos Corporation
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