Clinical trials: Contrast Sensitivity
Cataract, Lens Opacities
Clinical Study to Investigate Outcomes of Trifocal Toric IOL POD FT in Asian Eyes
Prospective, controlled, single-surgeon, single-center clinical study to compare visual acuity outcomes to data obtained in a similar study by the same principal investigator on the trifocal IOL POD F (study no.
- Conditions
- Cataract, Lens Opacities, Presbyopia
- Trial name
- NCT03844828
- Testing
- IOL implantation experimental
- Where
- Philippines
- Volunteers
- 100 people
- Sponsor
- Beaver-Visitec International, Inc.
Vision Disability
Correlation of Scheimpflug Densitometry Measurements of Corneal Haze With Disability Glare
Disability glare is described as "halos" or "starbursts" around bright sources of light that can cause discomfort and reduce vision.
- Trial name
- NCT02244892
- Where
- United States
- Sponsor
- University Hospitals Cleveland Medical Center
Hyperopic Presbyopia
Prospective Investigation of SUPRACOR Visual Outcomes of Presbyopic Hyperopic Patients With and Without Astigmatism
This phase IV study is an open, prospective, single-center, single-surgeon bilateral eye study to investigate the bilateral uncorrected intermediate visual acuity of presbyopic hyperopic patients, who have been treated with…
- Trial name
- NCT01628146
- Testing
- SUPRACOR LASIK treatment
- Where
- Ireland
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Technolas Perfect Vision GmbH
Optic Neuritis
Privosegtor Investigation in Optic Neuropathies Efficacy Evaluation Research
The goal of this clinical trial is to evaluate the safety and efficacy of privosegtor, a neuroprotective candidate, in patients diagnosed with optic neuritis (ON).
- Trial name
- PIONEER-1 (NCT07623668)
- Testing
- Privosegtor, Methylprednisolone
- Where
- 4 sites in United States
- Volunteers
- 210 people
- Sponsor
- Oculis
Contrast Allergies
Reactions to Contrast Media (CM) Administered at the Time of the Endoscopic Retrograde Cholangiopancreatography (ERCP)
The aim of this study is to prospectively document the incidence of CM adverse reactions at the time of ERCP and to determine whether various perceived risk factors are predictive of adverse reaction.
- Trial name
- NCT00900640
- Testing
- ERCP as medically indicated by subjects referring physician
- Where
- United States
- Volunteers
- 27 people
- Sponsor
- University of Florida
Non Proliferative Diabetic Retinopathy, Proliferative Diabetic Retinopathy
Changes in Electroretinogram and Contrast Sensitivity After PASCAL Treatment
Laser photocoagulation has become the treatment of choice in PDR. Laser photocoagulation has become the treatment of choice in PDR.
- Trial name
- NCT00563043
- Testing
- PASCAL laser treatment
- Where
- Mexico
- Volunteers
- 8 people
- Sponsor
- Asociación para Evitar la Ceguera en México
Diabetes Mellitus - Type 1, Diabetes Mellitus - Type 2
Diabetes Visual Function Supplement Study
This study will evaluate the effects of a novel multi-component dietary supplement on the visual function and retinal structure of patients with diabetes with both no diabetic retinopathy and mild to moderate diabetic…
- Conditions
- Diabetes Mellitus - Type 1, Diabetes Mellitus - Type 2, Non-proliferative Diabetic Retinopathy
- Trial name
- DiVFuSS (NCT01646047)
- Testing
- multi-component nutritional supplement capsules, multi-component dietary supplement
- Where
- United States
- Volunteers
- 70 people
- Sponsor
- ZeaVision, LLC
Myopia, Dry Eye Disease (DED)
Study of Eye Fatigue From Digital Screens and Its Impact on Visual Performance in People With Normal Vision and Myopia, With and Without Dry Eye Symptoms and Signs
The goal of this observational study is to investigate the effects of eye fatigue induced by screen task on dry eye disease (DED) signs and symptoms, visual performance, and visual behavior in young adults with and without DED…
- Trial name
- RReye (NCT07844408)
- Testing
- Eye Exams, Ocular Biometry and Aberrometry, Wearing a Smartwatch
- Where
- France
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Essilor International
Intraocular Lens, Cataract
Comparison of a Novel Non-diffractive Extended Depth of Focus Intraocular Lens (IOL) and a Trifocal IOL
The purpose of this study is to compare visual performance and quality of life (QOL) following bilateral implantation of a novel non-diffractive extended depth-of-focus (EDOF) intraocular lens (IOL) (AcrySof® IQ Vivity, Alcon…
- Conditions
- Intraocular Lens, Cataract, Quality of Life
- Trial name
- NCT05262504
- Testing
- İntraocular lens implantation
- Where
- Turkey (Türkiye)
- Volunteers
- 52 people
- Sponsor
- Baskent University Ankara Hospital
Myopia, Child Myopia Progression
Effect of MiYOSMART iQ Spectacle Lenses on Myopia Progression in Children
This prospective, single-center study aims to evaluate the efficacy and safety of MiYOSMART iQ spectacle lenses with DIMS (Defocus Incorporated Multiple Segments) and Triple Enhanced Design (TED) technology in slowing myopia…
- Trial name
- NCT07387159
- Testing
- MiYOSMART iQ spectacle lenses
- Where
- Russia
- Volunteers
- 70 people
- Sponsor
- Hoya Lens Rus LLC
Bipolar Depression
Neural and Visual Responses to Light in Bipolar Disorder: A Novel Putative Biomarker
Objective. Bipolar Disorders (BD) are a major public health problem. The investigators still lack knowledge of the mechanisms which contribute to BD.
- Trial name
- LightEyeBD (NCT02048995)
- Where
- United States
- Volunteers
- 91 people, healthy volunteers welcome
- Sponsor
- Northwestern University
Lenses, Intraocular, Pseudophakia
Intermediate Vision in a Driving Simulator Environment: Comparison of the J&J EYHANCE With a Conventional Monofoc. IOL
To compare (low contrast) visual acuity (VA) and contrast sensitivity (CS) - both at intermediate distances under nighttime driving conditions in a driving simulator between patients with bilateral EYHANCE IOLs OR bilateral…
- Conditions
- Lenses, Intraocular, Pseudophakia, Near Vision, Driving
- Trial name
- JJ-EYHANCE (NCT04059289)
- Testing
- Posterior chamber intraocular lens (IOL)
- Where
- Germany
- Volunteers
- 11 people
- Sponsor
- Aalen University
Cataract After, Astigmatism
Influence of Residual Astigmatism on Visual Acuity in Patients Undergoing Cataract Surgery With Trifocal Intraocular Lens Implantation
MAIN OBJECTIVE: To assess the influence of residual astigmatism on visual acuity in the different lens foci in patients operated on for cataracts with a trifocal intraocular lens implant.
- Conditions
- Cataract After, Astigmatism, IOL, Visual Acuity
- Trial name
- NCT04387721
- Testing
- Kind of trifocal IOL
- Where
- Spain
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Enrique Ordiñaga-Monreal, OD, MSc
Vision, Entoptic
Macular Pigment and Glare Disability
The purpose of this study is: I. To measure MP optical density (MPOD) in two groups (experimental and placebo) of 50 subjects each (N = 100), during an Lutein + Zeaxanthin supplementation period of 12 months. II.
- Trial name
- MP-GD (NCT00909090)
- Testing
- 12 mg Lutein + Zeaxanthin
- Where
- United States
- Volunteers
- 109 people, healthy volunteers welcome
- Sponsor
- University of Georgia
Refractive Errors
Comparison of Higher Order Aberrations and Contrast Sensitivity Between Acrysof SN60AT, SN60WF and Restore Intraocular Lenses
This project involves evaluation of post operative contrast sensitivity and wavefront aberration results among patients implanted with standard monofocal lenses (Acrysof SN60AT/SN60WF) and the new presbyopic correcting multifocal…
- Trial name
- NCT00345085
- Testing
- Wavefront and Contrast Sensitivity
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Texas Southwestern Medical Center
Visual Acuity
Visual Outcomes of a Segmental Refractive Multifocal Intraocular Lens
To evaluate visual outcomes of a segmental refractive multifocal intraocular lens (IOL) after cataract surgery.
- Trial name
- NCT03452969
- Testing
- Implantation of multifocal intraocular lens
- Where
- Germany
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- University Clinic Frankfurt
Lenses, Intraocular
Visual Acuity After Using A New Monofocal Intraocular Lens Compared To Standard Monofocal Lens
This is a prospective comparative interventional clinical study, that took place from January 2021 to November 2021. Twenty patients (20) were enrolled in this study 10 patients in each group.
- Trial name
- NCT05430295
- Testing
- phacoemulsification, monofocal intraocular lens implantation
- Where
- Egypt
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Kasr El Aini Hospital
Dry Eye Disease
The Relationship of Residence Time and Visual Effect of Optive and Systane in Dry Eye Subjects
The benefits of artificial tears to relieve dry eye symptoms include, but are not limited to: stabilizing the tear film layer, fluid supplement action, improving visual acuity, and comfort.
- Trial name
- NCT00553579
- Where
- United States
- Volunteers
- 18 people
- Sponsor
- Southern California College of Optometry at Marshall B. Ketchum University
Allergic Reaction
Interest of Challenge Tests for Diagnosis of Immediate Hypersensitivity Against Iodinated Contrast Agents
Iodinated contrast agents (ICA) are widely used in medical imaging. They provide however a risk of immediate hypersensitivity reactions (IHS). The risk of anaphylactic shock is estimated at 1/100 000 injections.
- Trial name
- DHIODE (NCT03525496)
- Where
- France
- Volunteers
- 85 people
- Sponsor
- Centre Hospitalier Régional Metz-Thionville
Dual Sensory Impairment of Vision and Hearing
Gaining Insight Into Dual Sensory Loss
The goal of this observational study is to explore difficulties in information access, mobility, communication and fatigue in people with combined vision and hearing impairments.
- Trial name
- DSL (NCT06362213)
- Where
- Netherlands
- Volunteers
- 300 people
- Sponsor
- Amsterdam UMC, location VUmc