Clinical trials: Colour Perception
Visual Snow Syndrome, Color Blindness
Study of Visual Perception Phenomena: Phosphene Mapping Induced by TMS and Its Relationship With Eye Movements
The purpose of this basic science study is to better understand human visual perception. Phosphenes are flashes of light that can be induced using Transcranial Magnetic Stimulation (TMS).
- Conditions
- Visual Snow Syndrome, Color Blindness, Healthy Volunteer
- Trial name
- NCT07110493
- Testing
- Transcranial Magnetic Stimulation (TMS), Electroencephalography (EEG), Eye-Tracking
- Where
- Russia
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Skolkovo Institute of Science and Technology
Education
The SMARTY Trial: Evaluating the Effects of Colour of Candy on Perceptions of Taste
The purpose of this trial is to determine if the colour of sweets (candy) effects taste.
- Trial name
- SMARTY (NCT04175015)
- Testing
- Smartie© sweet/candy
- Where
- Ireland
- Volunteers
- healthy volunteers welcome
- Sponsor
- National University of Ireland, Galway, Ireland
Shade Match, Teeth Color
Impact of Presentation Sequence on Patient Tooth Shade Selection
This study is a clinical trial designed to understand how the way a dentist presents tooth color options affects a patient's final choice for their dental treatment.
- Conditions
- Shade Match, Teeth Color, Patient Preference, Aesthetic Perception
- Trial name
- NCT07370545
- Testing
- Sequential Shade Presentation (Natural to Bleached), Sequential Shade Presentation (Bleached to Natural), Simultaneous Shade Presentation (Full Range)
- Where
- Jordan
- Volunteers
- 210 people, healthy volunteers welcome
- Sponsor
- University of Jordan
Pain, Local Infiltration
Pain Perception With a Comfort-ın Jet Injection and Conventional Dental Injection
The investigators aimed to compare the effectiveness of the Comfort-in system, which is a jet injection type, and infiltrative anesthesia with a traditional injector, and to measure the effect of children's anxiety on the…
- Conditions
- Pain, Local Infiltration, Anesthesia, Fear
- Trial name
- NCT04682080
- Testing
- Needle-free injection
- Where
- Turkey (Türkiye)
- Volunteers
- 94 people, healthy volunteers welcome
- Sponsor
- Tokat Gaziosmanpasa University
Dry Eye, Eye Strain
Effects of Gunnar Computer Glasses on Viewing Comfort and Performance
The proposed study aims to test if Gunnar computer glasses provide any advantages, in comparison to no glasses, on the following aspects in computer-related office work: Any enhancement on the visual performance of the basic…
- Conditions
- Dry Eye, Eye Strain, Visual Acuity, Color Perception
- Trial name
- NCT02925884
- Testing
- Gunnar OTC Glasses
- Where
- United States
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Pacific University
Melanoma
Melanoma Perception and Health Literacy in People of Color
This study will examine the effectiveness of a targeted, health literate educational intervention for people of color compared to a standard melanoma education pamphlet for increasing knowledge and promoting early melanoma…
- Trial name
- NCT02437305
- Testing
- ABCDEs of Melanoma Skin Cancer, ABCDEs of Melanoma
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Northwestern University
Dermatology
People of Color and Dermatology: A Deeper Look at Patients' Perceptions of Care and the Need for Greater Diversity in Dermatology
Surveys will be collected to evaluate views from people of color and their dermatology experience. The information collected will look at patients' perceptions of care and the need for greater diversity in dermatology.
- Trial name
- NCT04991285
- Where
- United States
- Volunteers
- 485 people
- Sponsor
- Northwestern University
Perception of Things Changing Color, Adaptive Behavior
Visual Mode Switching in Color Perception
Participants will be given experience wearing colored lenses that add a tint to the environment. Changes in visual perception and neural processing that arise as a result of this experience will be measured.
- Trial name
- NCT05779228
- Testing
- Mode Switching Training
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Minnesota
Color Perception, Tooth
Comparison of Visual and Spectrophotometric Methods for Dental Color Measurement - An in Vivo Study
Twenty patients of Dental Medicine School will be recruited to participate in a pilot study about dental color measurement in which visual and digital instruments will be tested.
- Trial name
- NCT03430713
- Testing
- Measure of tooth color
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Grupo de Investigação em Bioquímica e Biologia Oral
Color Blindness, Red, Reaction Time
Effect of Protanopia on the Brightness Perception of Brake Lights
The aim of the offered project is to investigate the influence of protanopia (red blindness) or protanomaly (red vision weakness) on the recognizability of red brake lights with the help of a test person study.
- Trial name
- ProLight (NCT04060238)
- Testing
- Anomaloscope (colour vision test)
- Where
- Germany
- Volunteers
- 16 people
- Sponsor
- Aalen University
Cataract
Light Filters in Intraocular Lenses (IOLs) and Its Influence on Colour and Contrast Vision.
Visible-light-filtering IOLs are implanted increasingly often in cataract surgery. Several studies examined the effect of light-filters on contrast and colour vision. However, the study outcomes were varying.
- Trial name
- NCT00612729
- Testing
- Polylens Y30 intraocular lens, Orange Series Model PC 440 Y intraocular lens
- Where
- Austria
- Volunteers
- 32 people
- Sponsor
- Hospital Hietzing
Normal Physiology
Perception, Sensation, Cognition and Action in Humans
Background: When people see and hear, the brain changes signals from the eyes and ears into perceptions and thoughts. No one fully understands how this happens.
- Trial name
- NCT03407066
- Where
- 2 sites in United States
- Volunteers
- 10,200 people, healthy volunteers welcome
- Sponsor
- National Eye Institute (NEI)
Breast Carcinoma
CARE: Cancer Risk Perception and Women of Color
This study examines patient understanding of current and lifetime risk for breast cancer in women of color from diverse racial and ethnic backgrounds.
- Trial name
- NCT06036875
- Testing
- Non-Interventional Study
- Where
- 3 sites in United States
- Volunteers
- 324 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Form Perception, Color Perception
Levari Exp.20: 2D - Partial Feedback
Suppose that observers are trying to classify a spot on the skin as normal or abnormal and suppose that the two attributes that are important are the color and shape of the spot.
- Conditions
- Form Perception, Color Perception, Decision Making
- Trial name
- NCT06355999
- Testing
- Color Feedback, Shape Feedback
- Where
- United States
- Volunteers
- 55 people
- Sponsor
- Brigham and Women's Hospital
Color Detection of Upper Central Incisors
Study on the Chromatic Perception of Digital Systems in Aesthetic Field
The study under consideration aims to evaluate differences in chromatic perception among three distinct color acquisition methodologies.
- Trial name
- NCT06346548
- Testing
- oral photography
- Where
- Italy
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- Paolone Gaetano
Cataract
Yellow Versus White Study
Blue-light-filtering IOLs are implanted increasingly often in cataract surgery. Several studies examined the effect of blue-light-filters on contrast and colour vision. However, the study outcomes were varying.
- Trial name
- YeWhi (NCT00612781)
- Testing
- cataract surgery (Hoya AF-1 [UY] YA-60BB), cataract surgery (Hoya AF-1 [UV] VA-60BB lens)
- Where
- Austria
- Volunteers
- 24 people
- Sponsor
- Hospital Hietzing
Color Blindness, Acquired
Evaluating Color Perception Under LED Red/Green and Green Dominant Light
The investigators are testing a Light-emitting Diode (LED) flashlight from First-Light™ USA called the Tomahawk MC Tactical Light to determine the range of colors people are able to see with these flashlights at night.
- Trial name
- NCT01927536
- Testing
- White LED Flashlight, Red/Green Green Dominant LED Flashlight
- Where
- United States
- Volunteers
- 39 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver
Perception of Skin of Color Clinics in African Americans
Black Patients' Lived Experiences and Perceptions of Skin of Color Clinics
Across the U.S. Skin of Color (SOC) clinics have been established with the goal of providing medical care and supporting research related to patients with skin of color.
- Trial name
- NCT02375659
- Where
- United States
- Volunteers
- 19 people
- Sponsor
- Northwestern University
Color Perception
Evaluation of Different Color Vision Tests in Children
The purpose of this study is to investigate which clinical colour vision assessment fits best for preschool children and school children.
- Trial name
- NCT02464241
- Testing
- only examination
- Where
- Switzerland
- Volunteers
- 71 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Colour Perception, Color Perception
Visual Perception, Binocular Rivalry, and Fatigue-Related Individual Differences in Colour and Illumination Judgement
This observational study aims to characterise individual differences in colour perception and binocular rivalry. Participants will complete computer-based visual perception tasks, including a colour perception task and a…
- Conditions
- Colour Perception, Color Perception, Binocular Rivalry
- Trial name
- NCT07671144
- Testing
- Computer-Based Visual Perception Tasks
- Where
- 2 sites in Hong Kong
- Volunteers
- 128 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University