Clinical trials: Reflex, Pupillary
Nociceptive Pain, Pupillary Light Reflex Lost
Clinical Trial Using Pupillometry to Measure Nociception in Healthy Volunteers.
Pupillometry has been used in healthy volunteers to investigate the usefulness of the pupil light reflex as an indicator of pain intensity on pressure as a nociceptive stimulus.
- Conditions
- Nociceptive Pain, Pupillary Light Reflex Lost, Healthy, Pain, Procedural
- Trial name
- NCT04864340
- Testing
- CE marked medical device, Algometer, Comparator
- Where
- Spain
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau
Healthy Participants
Pupillary Dilation Reflex in Healthy Volunteers
This a single site, observational study that will examine how the pupil responds to neurostimulation under different conditions in healthy adults.
- Trial name
- NCT07746167
- Testing
- No intervention (observational study)
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Children's National Research Institute
Hypotension, Spinal Anesthesia
Pupillary Light Reflex to Predict Post-Spinal Hypotension in Elective Cesarean Delivery
This prospective observational cohort study investigates whether pre-anesthetic pupillary light reflex (PLR) parameters can predict the risk of hypotension following spinal anesthesia in women undergoing elective cesarean…
- Conditions
- Hypotension, Spinal Anesthesia, Cesarean Delivery
- Trial name
- NCT07678723
- Testing
- Not applicable- observational study
- Where
- Egypt
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Al-Azhar University
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
Acute Vestibular Syndrome, Vertigo
Quantitative Eye Movement Measurements in Patients with Acute Vestibular Syndrome
BACKGROUND: A chief complaint of acute vertigo/dizziness is related to about 2.1-7.1% of all emergency department (ED) visits. About 25% of all patients with acute prolonged vertigo meeting diagnostic criteria of AVS (acute…
- Conditions
- Acute Vestibular Syndrome, Vertigo, Stroke Acute, Acute Unilateral Vestibulopathy (AUV)
- Trial name
- NCT06668857
- Testing
- video-oculography
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Alexander Tarnutzer
Healthy Volunteers
Effect of Ambient Light on the Parameters of the Pupillary Light Reflex
The purpose of this study is to determine the effects of varying luminescent levels on the pupillary response.
- Trial name
- NCT01207817
- Testing
- Pupillometry
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Medicine and Dentistry of New Jersey
Primary Open Angle Glaucoma, Primary Open-Angle Glaucoma, Unspecified Eye
Glaucoma Screening Using Dynamic Analysis of Computerized Pupillary Light Reflex Assessment Device
To explore an effective diagnostic tool of glaucoma through the dynamic analysis of computerized pupillary light reflex assessment device (CPLRAD) pupillography based on iris recognition techniques and investigate its feasibility…
- Conditions
- Primary Open Angle Glaucoma, Primary Open-Angle Glaucoma, Unspecified Eye, Primary Open Angle Glaucoma of Both Eyes, Suspect Glaucoma
- Trial name
- NCT04595227
- Testing
- Computerized pupillary light reflex assessment device
- Where
- China
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Peking University
Opioid-Induced Respiratory Depression, Postoperative Complications (Cardiopulmonary)
Pupillometry in Identifying Risk of Postoperative Opioid-induced Respiratory Depression in Children Undergoing Tonsillectomy
This study will evaluate whether quantitative pupillometry measurements can be used to identify children at risk for postoperative opioid-induced respiratory depression (OIRD) following tonsillectomy.
- Conditions
- Opioid-Induced Respiratory Depression, Postoperative Complications (Cardiopulmonary), Respiratory Complications Due to Anesthesia
- Trial name
- NCT07573150
- Testing
- Infrared Pupillometry
- Where
- 2 sites in United States
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- NeurOptics Inc
Brain Concussion, Reflex, Pupillary
Utility of Pupillary Metrics in Diagnosis and Management of Concussion in Children
The purpose of this study is to gather information and compare the potential use of pupillometry to identify concussions and post concussive syndrome with standard age appropriate assessments.
- Conditions
- Brain Concussion, Reflex, Pupillary, Post-Concussion Syndrome, Brain Injuries, Traumatic
- Trial name
- NCT04540445
- Testing
- Pupillary Assessment
- Where
- United States
- Volunteers
- 130 people, healthy volunteers welcome
- Sponsor
- Children's Hospital of Orange County
Pain
Pupillometry - Future of Objective Pain Reaction Measurement While Unconscious
This study aims to assess the usefulness of pupillometry as a nociceptive indicator during elective orotracheal intubation in patients given intravenous lignocaine pre-intubation as compared to a placebo pre-intubation.
- Trial name
- NCT04000126
- Testing
- Pupil reflex dilation measurement (PRD), PPI (Pupillary Pain Index), lidocaine
- Where
- Poland
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- University of Warmia and Mazury
Mental Fatigue, Emergency Paramedics' Fatigue
The Reliability Assessment of Emergency Paramedics' Fatigue Using Automated Pupillometry
Due to the limitations of current approaches to assess emergency paramedics' fatigue, a portable, quick, easy, and objective technique is required to be developed.
- Trial name
- NCT04954430
- Testing
- pupillometer
- Where
- China
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Second Affiliated Hospital, Zhejiang University, School of Medicine
Cannabis Intoxication, Drug Effects
The Efficacy of a Smart Phone-based Test on Measuring Pupillary Light Reflex Alterations Following Cannabis Use Healthy in Adults
The goal of this open label study is to evaluate the efficacy of smart phone-based test (SOBEREYE OPTOVERA) on measuring pupillary light reflex (PLR) alterations following cannabis use healthy in adults.
- Trial name
- NCT06967051
- Testing
- Tetrahydrocannabinol (10 mg), Tetrahydrocannabinol (25 mg), Pupillary Light Reflex (PLR) Test
- Where
- Canada
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Sobereye Inc.
Neurogenic Bladder
Bioavailability of Vagantin® Coated Tablets Relative to an Oral Methantheline Bromide Solution
The primary objective of the study is: •To describe extent and rate of absorption of methantheline after single oral dose administration of Vagantin® coated tablets (Test) in comparison to a methantheline bromide solution…
- Trial name
- NCT01429090
- Testing
- blood sampling, Vagantin®, methantheline solution
- Where
- Germany
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University Medicine Greifswald
Drug Effect (Glaucoma Drugs)
Pupillary Response After Glaucoma Medication
Investigation of the effect on the pupillary constriction by latanoprost, dorzolamide,timolol in healthy subjects. The pupillary constriction is compared to no drug.
- Trial name
- pupil (NCT02522039)
- Testing
- Latanoprost, Timolol, Dorzolamide
- Where
- Denmark
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- Glostrup University Hospital, Copenhagen
Caffeine, Alcohol
Investigating the Effect of Caffeine and Alcohol on Pupil Dynamics
The goal of this study is to understand how caffeine and alcohol affect the ocular and physiological systems, especially how the pupil (the aperture in the colored part of the eye) responds to light.
- Conditions
- Caffeine, Alcohol, Pupillary Response, Eye Movements
- Trial name
- PAC (NCT07625358)
- Testing
- Caffeine administration, Alcohol (Ethanol)
- Where
- Singapore
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- National University of Singapore
Optic Neuritis
Pupillometry Dynamic Measures in Patients Without Ocular or Neurological Disease
Retrobulbar optic neuritis (NORB) is the damage to the optic nerve caused by inflammation. It causes a rapidly progressive and painful visual loss, often among young subjects.
- Trial name
- PCT (NCT02894281)
- Testing
- pupillary light reflex
- Where
- France
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Fondation Ophtalmologique Adolphe de Rothschild