Clinical trials: Binocular Vision Suppression
MEASLES DISEASE
Unravelling the Measles Paradox (MISIA)
The measles (MeV) paradox refers to an apparent contradiction: natural measles causes a transient but profound immune suppression putting patients at risk for opportunistic infections for years, while at the same time MeV…
- Trial name
- MISIA (NCT07267585)
- Where
- Netherlands
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Erasmus Medical Center
Non-visual Photoreception
Investigating the Effects of Evening Light Exposure on Melatonin Suppression, Alertness and Nocturnal Sleep
The timing and quality of sleep is governed by environmental and physiologic factors. Environmental factors, especially ambient lighting can impact the circadian system and alter the timing and structure of sleep.
- Trial name
- NCT01586039
- Testing
- Visible light
- Where
- United States
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Diplopia, Binocular Vision Suppression
Understanding Visual Confusion Using Stereoscopic Displays
In this research study we want to test how people understand a visual scene when the same image is presented to both the eyes, but portions of these images are altered in terms of contrast, depth or in some cases motion.
- Conditions
- Diplopia, Binocular Vision Suppression, Binocular; Fusion, With Defective Stereopsis, Monocular Diplopia
- Trial name
- NCT04957745
- Testing
- Binocular visual confusion (unilateral opaque), Unilateral monocular visual confusion (unilateral see-through), Bilateral monocular visual confusion (bilateral see-through)
- Where
- United States
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- Massachusetts Eye and Ear Infirmary
Puberty, Hyperandrogenism
Acute Progesterone Suppression of Wake vs. Sleep Luteinizing Hormone Pulse Frequency in Pubertal Girls With and Without Hyperandrogenism
The purpose of this study is two-fold. (1) We will determine if in mid- to late pubertal girls without hyperandrogenism (HA), progesterone (P4) acutely reduces waking luteinizing hormone (LH) frequency to a greater extent than…
- Trial name
- CRM003 (NCT00929006)
- Testing
- Micronized progesterone suspension
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- University of Virginia
Dystonia, Focal Dystonia
Brain Changes in Blepharospasm
This study will examine the role of certain areas of the brain in blepharospasm, a type of dystonia (abnormality of movement and muscle tone) that causes unwanted or uncontrollable blinking or closing of the eyelids.
- Conditions
- Dystonia, Focal Dystonia, Cerebellar Disease
- Trial name
- NCT00487383
- Where
- United States
- Volunteers
- 47 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Overweight, Obesity
A Short-Term Appetite Suppression Trial Using Appethyl™: The Pizza
The purpose of the study is to determine whether Appethyl™, made from spinach, will reduce appetite and hunger given on the same day of testing.
- Trial name
- Pizza (NCT01919814)
- Testing
- Appethyl™
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Pennington Biomedical Research Center
Infertility, Premature Ovarian Failure
Single Follicular Dexarelix for LH Suppression During Ovarian Stimulation in Oocyte Donors.
A randomized prospective study in the evaluation of the long acting GnRH antagonist Degarelix against the classical multidose regime with Ganirelix for LH suppression during the follicular phase of an ovarian stimulation cycle in…
- Trial name
- NCT03861715
- Testing
- live birth rate
- Where
- Greece
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Assisting Nature
Plaque Psoriasis
An Open Label, Safety Study to Assess the Potential for Adrenal Suppression
An Open Label, Safety Study to Assess the Potential for Adrenal Suppression Following Treatment with DSXS (Taro Pharmaceuticals U.S.A., Inc.) in Patients with Plaque Psoriasis
- Trial name
- NCT02932878
- Testing
- DSXS topical
- Where
- United States
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Sun Pharmaceutical Industries, Inc.
Healthy
Evaluate the Pharmacokinetics and Gonadotropin Suppression of Nestorone®-Testosterone (NES/T) Combination Gel in Men
This is a prospective, randomized, double-blinded, two-center trial to evaluate the gonadotropin suppressive activity of transdermal treatment with a combined NES/T gel, or T gel alone, for 28 days.
- Trial name
- NCT02432261
- Testing
- Nestorone® /testosterone gel, Testosterone only gel
- Where
- 2 sites in United States
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- Kimberly Myer
Malaria
Markers of T Cell Suppression: Associations With Malaria Infection and Antimalarial Treatment in Malian Children
Background: The disease malaria can cause very serious health problems. Researchers want to see if malaria affects the way T cells and vaccines work in the body.
- Trial name
- NCT02504918
- Where
- Mali
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
Healthy
Comparison of Prilosec Over-the-counter (OTC)® Versus Prevacid® for Gastric Acid Suppression
The objective of this study is to compare Prilosec OTC® to Prevacid® for gastric acid suppression.
- Trial name
- NCT00903448
- Testing
- Prilosec OTC (omeprazole-magnesium), Prevacid
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Procter and Gamble
COPD
Evaluation Inhaled Corticosteroids on Exhaled Nitric Oxide Gas Exchange
To evaluate the role of inhaled corticosteroids to suppress nitric oxide gas exchange in stable patients with moderate-to-severe COPD who are current non-smokers and not on oral corticosteroids.
- Trial name
- NCT00568347
- Testing
- fluticasone 100mcg/ salmeterol 50mcg, fluticasone 250/salmeterol 50, salmeterol
- Where
- United States
- Volunteers
- 39 people, healthy volunteers welcome
- Sponsor
- Arthur F Gelb MD
Melatonin
Color-dependent Melatonin Suppression
The purpose of this study is to examine the effects of complex, broad-band spectra light on the production of melatonin in humans.
- Trial name
- NCT02936674
- Testing
- Light - standard, Light - alternate
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- VA Palo Alto Health Care System
Hiv
Engaging Men Through HIV Self-Testing With Differentiated Care to Improve ART Initiation and Viral Suppression Among Men in Malawi
Men in sub-Saharan Africa who test HIV-positive continue to have poor ART initiation and retention outcomes. The proposed project will test a home-based ART intervention for men who are living with HIV compared to facility-based…
- Trial name
- NCT04858243
- Testing
- Home-Based ART, Facility-Based ART
- Where
- Malawi
- Volunteers
- 930 people, healthy volunteers welcome
- Sponsor
- University of California, Los Angeles
Malaria
Markers of T Cell Suppression: Antimalarial Treatment and Vaccine Responses in Healthy Malian Adults
Background: People with malaria often show altered immune responses to many illnesses and vaccines. This means that the malaria might cause immune suppression. It is not clear how or which vaccines are impacted by malaria.
- Trial name
- NCT02544048
- Where
- Mali
- Volunteers
- 49 people, healthy volunteers welcome
- Sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
Visual Suppression, Amblyopia
Autostereoscopic Dynamic Near Vision Testing
This is an analysis of tests of near vision. Visual perception testing using a novel program on an interactive three dimensional electronic device: Autostereoscopic dynamic near games for monocular visual acuity, stereopsis and…
- Conditions
- Visual Suppression, Amblyopia, Color Vision Defects
- Trial name
- PDICheck (NCT04606355)
- Testing
- Visual Acuity, stereopsis, Color vision
- Where
- United States
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Alaska Blind Child Discovery
Chronic Hepatitis C Infection
Herpes Simplex Type 1 Suppression in Hepatitis C
The purpose of this study is to examine the effects of valacyclovir in patients who have chronic hepatitis C, antibodies to herpes simplex type 1 infection but do not have antibodies to herpes simplex type 2 infection.
- Trial name
- HSV1/HCV (NCT01580995)
- Testing
- Valacyclovir
- Where
- United States
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
Skin Diseases
Trem-1 and Ultraviolet Radiation-induced Immune Suppression
The overall goal of this study is to determine novel mechanisms for ultraviolet light (UV)-induced suppression of the immune system in human subjects and to improve understanding of UV-induced skin carcinogenesis.
- Trial name
- NCT05020496
- Testing
- Diphenylcyclopropenone (DPCP)
- Where
- United States
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- University of Alabama at Birmingham
Adrenal Insufficiency
Adrenal Suppression and Adrenal Recovery Induced by Megestrol Acetate
Megestrol Acetate (MA) is a progesterone-like hormone that has been utilized as a birth control agent, chemotherapeutic drug, and more recently, to induce appetite and weight gain in patients malnourished as a result of radiation…
- Trial name
- NCT00575029
- Testing
- megestrol acetate
- Where
- United States
- Volunteers
- 7 people, healthy volunteers welcome
- Sponsor
- University of Arkansas
HIV Infections, Men
Improving HIV Testing, Linkage, and Retention in Care for Men Through U=U Messaging
This study will evaluate the impact of U=U messaging and counseling on gaps in the HIV care cascade for men, including testing uptake and ART initiation (Aim 1), achieving viral suppression and retention in care (Aim 2) in two…
- Conditions
- HIV Infections, Men, Treatment Adherence
- Trial name
- NCT05602376
- Testing
- U=U testing messaging scripts, U=U adherence messaging scripts
- Where
- 2 sites in South Africa
- Volunteers
- 3,642 people, healthy volunteers welcome
- Sponsor
- Desmond Tutu HIV Foundation