Clinical trials: Pupil
Pupillary Dilation Effect During Cycloplegic Refraction
Comparing Efficacy and Safety of CTO0303 in Pediatric Subjects
This is a prospective randomized study compared with active control arm.
- Trial name
- NCT06609525
- Testing
- CTO0303-A, CTO0303-B, CTO0303-C
- Where
- South Korea
- Volunteers
- 156 people, healthy volunteers welcome
- Sponsor
- Taejoon Pharmaceutical Co., Ltd.
Pupillary Occlusion
Influence of Gaze Shift and Emotions on Symptoms of Blepharospasm
Blepharospasm (BEB) is a focal dystonia characterized by forceful, involuntary contractions of the orbicularis oculi muscle. (Jankovic et al 1983) Patients with BEB report task and situation specific modulations of their…
- Trial name
- NCT01759745
- Where
- Austria
- Volunteers
- healthy volunteers welcome
- Sponsor
- Kirsten Elwischger, MD
Paresis
Pupil-Indexed Noninvasive Neuromodulation
Vagus nerve stimulation (VNS) is thought to activate neural pathways that release chemicals which promote plasticity and learning.
- Trial name
- NCT06282406
- Testing
- Transcutaneous Electrical Stimulation
- Where
- United States
- Volunteers
- 110 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
Peer Group, Parents
Cluster-RCT Collective Nasopharyngeal COVID-19 Testing Amongst Pupils
Does the presence of fellow pupils and parents improves a pupil's resistance to undergo a nasopharyngeaal swab test?
- Trial name
- NCT04993547
- Testing
- Parent and peer presence
- Where
- Belgium
- Volunteers
- 952 people, healthy volunteers welcome
- Sponsor
- University Hospital, Ghent
Healthy, Teenager
Effects of Afternoon and Evening Light on Teenagers' Melatonin Levels, Alertness, Sleepiness and Sleep
Many teenagers are familiar with this: on school days, they have to get up early; during the day, they hardly get any light exposure; in the evening, they go to bed late - and are then tired at school the next day! Around the…
- Conditions
- Healthy, Teenager, Healthy Lifestyle
- Trial name
- TeenLight (NCT05483296)
- Testing
- Dim light condition, Moderate light condition, Bright light condition
- Where
- Switzerland
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- University Psychiatric Clinics Basel
SARS-CoV-2
Screening for COVID-19 in Teachers, Childcare Educators, Pupils and Preschoolers
The main objectives of this study are 1. to establish the prevalence of SARS-CoV-2 in schools and kindergartens in the State of Mecklenburg-Vorpommern in autumn and winter 2020/2021 2.
- Trial name
- COKITS (NCT04619407)
- Testing
- Nasopharyngeal swab, Serum testing
- Where
- Germany
- Volunteers
- 142 people, healthy volunteers welcome
- Sponsor
- University Medicine Greifswald
Full Spectrum
A Self-controlled Study of the Effect of Partial Spectral Absence of Visible Light on the Pupil
Previous studies have shown that the spectrum of light influences myopia. LED lights with a partially absent light spectrum increase the risk of myopia progression compared to LEDs with a full spectrum, potentially mediated by…
- Trial name
- NCT06501131
- Testing
- full-spectrum light exposure, specific spectrum absence light exposure
- Volunteers
- 66 people, healthy volunteers welcome
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Myopia, Visual Diet
Longitudinal Measurements of Visual Diet in Children
Myopia is a leading cause of visual impairment worldwide, with prevalence rising rapidly among children. Growing evidence suggests that environmental and behavioral factors play a dominant role in ocular growth; however, current…
- Conditions
- Myopia, Visual Diet, Pupil, Viewing Distance
- Trial name
- VEET (NCT07642999)
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- State University of New York College of Optometry
Light Sensitivity
Eye Movement Behaviour and Pupil Size in Natural Outdoor and Indoor Scenes
In this study, the researchers will be using eye tracking and detailed lighting measurements to understand how different types of indoor and outdoor lighting affect the eye movements and pupil sizes of our participants.
- Trial name
- NCT05971238
- Testing
- Indoor vs. outdoor scenes
- Where
- Germany
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Technical University of Munich
Emmetropia, Myopia
Effects of Light on the Choroid and Pupil
Monochromatic light creates longitudinal chromatic aberration, with short wavelength blue light forming a focal point in front of the retina and long wavelength red light forming a focal point behind the retina.
- Trial name
- NCT05852782
- Testing
- White Light therapy, Blue light therapy, Red light therapy
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Houston
Horner's Syndrome
Clinical Efficacy of Supraclavicular Block for Arthroscopic Shoulder Surgery
The aim of this study is to compare the efficacy of supraclavicular and interscalene brachial plexus blocks in the patients undergoing arthroscopic shoulder surgery.
- Trial name
- NCT01958801
- Testing
- Supraclavicular block, Interscalene block
- Where
- South Korea
- Volunteers
- 104 people, healthy volunteers welcome
- Sponsor
- Daegu Catholic University Medical Center
Sexual Harassment, Anti-Gay Bias
Effectiveness Study of the Intervention "Stop Sexual Harassment" in Secondary School
"Stop sexual harassment" is a school based intervention tailored to reduce sexual- and gendered harassment among pupils in secondary school.
- Conditions
- Sexual Harassment, Anti-Gay Bias, Non Sexual Harassment, Gender-based Violence
- Trial name
- NCT04716400
- Testing
- Stop sexual harassment
- Where
- Norway
- Volunteers
- 2,037 people, healthy volunteers welcome
- Sponsor
- NORCE Norwegian Research Centre AS
Cataract
Topical Bromfenac for Intraoperative Miosis and Pain Reduction
To evaluate the effect of bromfenac ophthalmic solution 0.09% for reduction of intraoperative miosis and pain in patient who have undergone femtosecond laser-assisted cataract surgery.
- Trial name
- NCT03831984
- Testing
- 0,09% Bromfenac, 0,1% sodium hyaluronate
- Where
- Mexico
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Hospital de La Luz
Normal Non-fluency, Cataract
Comparative Study of the Optical Biometer for Measurements of the Eye
The primary purpose of this comparative clinical study is to collect clinical data to demonstrate the equivalence of the investigational device to the predicate device for measurements of the eye.
- Conditions
- Normal Non-fluency, Cataract, Aphakic Eye, Eyes With Corneal Abnormality
- Trial name
- NCT01729962
- Where
- United States
- Volunteers
- 125 people, healthy volunteers welcome
- Sponsor
- Nidek Co. LTD.
Retinopathy of Prematurity
Changes in Vital Signs and Pupil Diameter Related to Pharmacologic Mydriasis in Premature Infants: A Randomized Double Blind Clinical Study
Retinopathy of prematurity (ROP) is one of the common anatomic causes of blindness among Filipinos, accounting for 47.7% of the cases.
- Trial name
- NCT04838665
- Testing
- 0.5% cyclopentolate and 2.5% phenylephrine, 0.5% tropicamide + 0.5% phenylephrine, 0.5% tropicamide + 0.5% phenylephrine with a cotton wick
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University of the Philippines
General Anesthesia, Intraoperative Awareness
Neuro-Mimic Indicators of Anesthesia Depth During General Anesthesia
This prospective observational study will evaluate neuro-mimic indicators of anesthesia depth, including eyelid reflex, eyeball movements, and pupil responses, in patients undergoing elective surgery under general anesthesia.
- Conditions
- General Anesthesia, Intraoperative Awareness, Eye Movements
- Trial name
- NCT07199049
- Testing
- Neuro-Mimic Observation Protocol
- Where
- Turkey (Türkiye)
- Volunteers
- 125 people, healthy volunteers welcome
- Sponsor
- Başakşehir Çam & Sakura City Hospital
Mydriasis
Pharmacodynamics of a Fixed Dose Combination of 0.34% Tropicamide and 2.5% Phenylephrine Hydrochloride, Eye Drop, Solution
The objective of this study is to explore pharmacodynamic effects and safety of IMP 08P2002F0 for dilation of the pupil, a solution combining two mydriatic agents tropicamide and phenylephrine hydrochloride at the concentrations…
- Trial name
- SOLMYD-PD (NCT07075224)
- Testing
- IMP 08P2002F0, Mydriasert® insert
- Where
- 2 sites in Greece
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Unither Pharmaceuticals, France
Light Sensitivity
"Eye Protection After Mydriatic Use for ROP Screening: Impact on Vitals Signs and Pain Scores"
Pupillary dilation induced by mydriatic agents during Retinopathy of Prematurity exams can persist for hours. Despite regular use of eye protection for mydriatic-induced light sensitivity for infants, children and adults, eye…
- Trial name
- NCT01860534
- Testing
- eye covers
- Where
- United States
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- The University of Texas Medical Branch, Galveston
Intraocular Pressure
The Effect of Brimonidine on Intraocular Pressure When Dilating Routine Patients
This an interventional study looking at two different sequences of pre-operative eye drops, to determine which order is more effective in reducing intraocular pressure with pupil dilation.
- Trial name
- NCT03139708
- Testing
- Alphagan, Phenylephrine, Tropicamide
- Where
- United States
- Volunteers
- 5 people, healthy volunteers welcome
- Sponsor
- Wake Forest University Health Sciences
Chronic Pain Due to Injury
Effects of Intramuscular (IM) Oxytocin on Pupil Diameter and Heart Rate Variability (HRV)
The goal of this study is to test the effects of oxytocin on heart rate variability and pupil diameter, both of which have subtle effects on the activity rate of the autonomic nervous system.
- Trial name
- NCT04105998
- Testing
- Oxytocin
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Wake Forest University Health Sciences