Clinical trials: Visual Functions
Visual Acuity
The Effects of Contact Lenses With UV/HEV-Filter on Visual Function
This is a 2-phase, single-site, non-dispensing, randomized, controlled, double-masked, 2x2 crossover study to objectively measure potential benefits of a new UV/HEV filter using psychophysical testing techniques.
- Trial name
- NCT05601544
- Testing
- ACUVUE OASYS 1-Day, ACUVUE OASYS MAX 1-Day, ACUVUE OASYS Multifocal
- Where
- United States
- Volunteers
- 145 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Parkinson's Disease
Visual Function During Gait in Parkinson's Disease: Impact of Cognition and Response to Visual Cues
Parkinson's disease (PD) is associated with problems of gait such as veering, difficulty turning, an inability to perceive doorways or obstacles, and negotiate uneven terrain.
- Trial name
- NCT02610634
- Where
- United Kingdom
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Newcastle-upon-Tyne Hospitals NHS Trust
Cataract
Visual Function After Implantation of Bilateral AcrySof ReSTOR Aspheric +3
A prospective evaluation of the visual parameters in a series of patients bilaterally implanted with AcrySof ReSTOR +3 Intraocular Lens (IOL).
- Trial name
- NCT00719732
- Testing
- ReSTOR
- Where
- United States
- Volunteers
- 218 people, healthy volunteers welcome
- Sponsor
- Alcon Research
Visual Acuity
Evaluation of Multifocal Contact Lens Designs With and Without an HEV Blocker on Visual Function
This is a single-masked, bilateral, controlled, randomized, 2x2 crossover, non-dispensing clinical trial to characterize the effects of an HEV-Blocker on several measures of visual function in a presbyopic population.
- Trial name
- NCT04995055
- Testing
- JJVC Investigational Multifocal Contact Lens TEST Lens, ACUVUE® OASYS Multifocal
- Where
- United States
- Volunteers
- 37 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Effects of Blue-light Blocking Lens on Visual Functions
Effects of Blue-light Blocking Lens on Visual Functions
Working Hypothesis: The blue-light blocking lens has no effect on the contrast sensitivity, accommodative response, color vision, and subjective grading of the quality of life and vision.
- Trial name
- NCT02821403
- Testing
- clear lens with regular coating, regular coating lens with yellow tint, clear lens with blue-light blocking coating
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Ametropia
The Effects of Contact Lenses With Experimental Dye on Visual Function
This is a single-site, two-visit, contralateral, non-dispensing, randomized, controlled and subject-masked study to measure potential benefits of the new UV blocker.
- Trial name
- NCT03556579
- Testing
- senofilcon A with new UV blocker, senofilcon A
- Where
- United States
- Volunteers
- 62 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Cataract
Patient Perception of Visual Quality and Function
The purpose of this study is to evaluate the visual quality and function of pseudophakic patients.
- Trial name
- NCT02146599
- Testing
- Administration of patient self-assessment
- Where
- United States
- Volunteers
- 301 people, healthy volunteers welcome
- Sponsor
- Abbott Medical Optics
Anxiety
Assessing Visual Processing in High Anxiety
High trait anxiety, a stable personality trait, is a risk factor for psychiatric disorders. Individuals with high trait anxiety have difficulty differentiating safety from threat, including visual information like emotional…
- Trial name
- ALPHA (NCT04187326)
- Testing
- Facial Microexpression Training
- Where
- United States
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- University of Massachusetts, Worcester
Brain Hypoxia
Metabolic Changes in the Activated Human Visual Cortex During Mild Hypoxia
The primary objective of this research is to measure changes in neurochemical concentrations during stimulation of the primary visual cortex, in both conditions of normoxia (normal oxygen availability) and induced mild hypoxia…
- Trial name
- NCT02482571
- Testing
- Mild Hypoxia
- Where
- United States
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- University of Minnesota
Glaucoma
Human Optokinetic Contrast Device (HOCD) to Measure Visual Function and Identify Patients With and Without Glaucoma
The purpose of this study is to determine if an optokinetic contrast detection device is sufficient to measure contrast sensitivity and to distinguish between patients with and without glaucoma.
- Trial name
- HOCD (NCT02014597)
- Testing
- HOCD
- Where
- United States
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- Benjamin Frankfort, MD, PhD