Clinical trials: Optic Nerve
Migraine
Retinal Nerve Fiber Layer Thickness Changes in Migraine: A Meta-Analysis of Case-control Studies
Optical coherence tomography (OCT) is a non-invasive retinal imaging technology that can provide high-resolution cross-sectional images of the peripapillary retinal nerve fiber layer (RNFL) and measure its thickness.
- Trial name
- NCT02196532
- Testing
- Device: Optical coherence tomography
- Where
- China
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- Yifan Feng
Vestibular Schwannoma, Inner Ear Disease
Vestibular Precision: Physiology & Pathophysiology
This project will investigate the role of noise in the vestibular system, and in particular its effects on the variability (precision) of vestibular-mediated behaviors.
- Conditions
- Vestibular Schwannoma, Inner Ear Disease, Dizziness, Neurofibromatosis 2
- Trial name
- NCT04890132
- Testing
- VOR precision training
- Where
- United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Massachusetts Eye and Ear Infirmary
Parkinson's Disease, Progressive Supranuclear Palsy(PSP)
Study on Artificial Intelligence-Based Facial and Speech-Related Patterns in Parkinson's Disease and Their Digital Biomarkers
This research employs AI to analyze facial expressions and speech patterns, aiming to develop new digital tools for diagnosing and differentiating Parkinson's disease and similar disorders.
- Conditions
- Parkinson's Disease, Progressive Supranuclear Palsy(PSP), Multiple System Atrophy, Healthy Control
- Trial name
- NCT07392411
- Testing
- video recording
- Where
- China
- Volunteers
- 720 people, healthy volunteers welcome
- Sponsor
- Beijing Tiantan Hospital
Uterus Myoma, Uterine Cancer
Effect of Anesthetic Agents on Optic Nerve Sheath Diameter
The present study is to evaluate the effect of anesthetic agents ( propofol , sevoflurane) on intracranial pressure of female patients undergoing laparoscopic-robotic surgery.
- Trial name
- NCT03701529
- Testing
- Sevoflurane, Propofol
- Where
- South Korea
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Hallym University Kangnam Sacred Heart Hospital
Parkinson's Disease, Alzheimer's Disease
Biomarkers in Neural Disorders
This study seeks to establish the sensitivity and specificity of what appears to be a unique brainstem biomarker of Parkinson's Disease (PD) - an electrically induced olygosynaptic nasotrigeminal reflex response - in…
- Conditions
- Parkinson's Disease, Alzheimer's Disease, Progressive Supranuclear Palsy, Essential Tremor
- Trial name
- NCT02761707
- Testing
- Electrical Brainstem Responses, Olfactory Tests, Visual Deprivation
- Where
- United States
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- University of Pennsylvania
GLAUCOMA 1, OPEN ANGLE, D (Disorder)
Spectral Domain Optical Coherence Tomography Analysis for Glaucoma
The aim of this study is to examine whether there is a difference in macular ganglion cell complex thickness and retinal nerve fiber layer thickness in early-stage Primary open angle glaucoma and normal tension glaucoma with…
- Trial name
- NCT01612416
- Testing
- RS-3000 OCT measurements
- Where
- Turkey (Türkiye)
- Volunteers
- 169 people, healthy volunteers welcome
- Sponsor
- Inonu University
Intraocular Pressure, Optic Nerve Sheath Diameter
Intraocular Pressure Versus Optic Nerve Sheath Diameter
This study involves observing and comparing Intraocular Pressure and Optic Nerve Sheath Diameter in steep trendelenburg position. Both observations will be done in same patient over the surgical duration.
- Trial name
- NCT02697825
- Testing
- Schiotz tonometer for Intraocular Pressure
- Where
- India
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Rajiv Gandhi Cancer Institute & Research Center, India
Alcohol Impairment, Nystagmus
Alcohol Impairment Detection in Healthy Adult Users With the Gaize Device
This study evaluates the effectiveness of the Gaize virtual reality headset as a non-invasive tool for detecting alcohol-related impairment through ophthalmic and neurological indicators.
- Conditions
- Alcohol Impairment, Nystagmus, Virtual Reality, Lack of Smooth Pursuit
- Trial name
- AAI (NCT07126938)
- Testing
- Alcoholic beverage
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Gaize
Uveitis
RNFL Thickness Measurements Obtained Using SD-OCT and SLP Using GDx Variable Corneal Compensation
The aim of this study is to evaluate the correlation of retinal nerve fiber layer (RNFL) thickness measured using spectral domain optical coherence tomography (SD-OCT) and scanning laser polarimetry (SLP) in uveitic eyes compared…
- Trial name
- Real (NCT03206268)
- Testing
- SD-OCT and SLP using GDx variable corneal compensation
- Where
- France
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Hospices Civils de Lyon
Obstructive Sleep Apnea Syndrome
Study of Ocular Blood Flow in Patients With Glaucoma and/or Obstructive Sleep Apnea Syndrome (OSAS)
Obstructive sleep apnea syndrome (OSAS) is a common disease, with a prevalence evaluated between 5 - 7% in the general population.
- Trial name
- NCT00874913
- Testing
- measurement of ocular blood flow
- Where
- France
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- University Hospital, Grenoble
Neuromyelitis Optica, Neuromyelitis Optica Spectrum Disorder
The Longitudinal CONQUER Study of Rare Neuroimmunologic Disorders
This study seeks to determine the biologic causes of inflammation in patients with Transverse Myelitis (TM) Neuromyelitis Optica Spectrum Disorder (NMOSD) and related conditions.
- Conditions
- Neuromyelitis Optica, Neuromyelitis Optica Spectrum Disorder, Transverse Myelitis, Optic Neuritis
- Trial name
- NCT01623076
- Where
- United States
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- University of Texas Southwestern Medical Center
Intracranial Pressure Increase, Seizures
Study on Optic Nerve Sheath Diameter Measurements in Prolonged Pediatric Seizures
A total of 88 postictal children with generalized or focal seizures were included in the study. The ONSD and ONSD/ETD ratio was measured independently by a pediatric neurologist and pediatric emergency expert, three times in both…
- Conditions
- Intracranial Pressure Increase, Seizures, Children, Only
- Trial name
- ONSD (NCT06451289)
- Testing
- Head computered tomography
- Where
- Turkey (Türkiye)
- Volunteers
- 197 people, healthy volunteers welcome
- Sponsor
- Balikesir University
Asthenopia, Contact Lenses
Connecting Contact Lenses and Digital Technology
This study seeks to address whether or not different types of daily disposable soft contact lenses may be a beneficial option for patients complaining of eye strain and visual discomfort while using digital devices.
- Conditions
- Asthenopia, Contact Lenses, Ocular Accommodation, Convergence, Excess
- Trial name
- NCT02921087
- Testing
- Test Daily Disposable Soft Contact Lenses, Control Daily Disposable Soft Contact Lenses
- Where
- United States
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- State University of New York College of Optometry
Eye Movement Disorder, Cognitive Dysfunction
Eye Movement and Cognitive Dysfunction
There is association between eye movement disorder and cognitive dysfunction. Therefore, utilizing eye movement and screening for cognitive dysfunction is feasible.
- Trial name
- EMCD (NCT04236375)
- Where
- China
- Volunteers
- 1,539 people, healthy volunteers welcome
- Sponsor
- Sun Yat-sen University
Healthy
Regulation of Optic Nerve Head Blood Flow During Combined Changes in Intraocular Pressure and Arterial Blood Pressure
Autoregulation is defined as the ability of a vascular bed to adapt its vascular resistance to changes in perfusion pressure. In the eye, several studies have reported that retinal blood flow is autoregulated over a wide range of…
- Trial name
- NCT00912665
- Testing
- Laser Doppler Flowmetry, Goldmann applanation tonometer, squatting
- Where
- Austria
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Esotropia
Vision Therapy Versus Prism Treatment in Small-angle Acute Acquired Concomitant Esotropia
This prospective, single-center, nonrandomized comparative study evaluates 6-month ocular alignment and binocular visual function outcomes following combined accommodation and fusional training or prism correction in patients…
- Trial name
- NCT06622044
- Testing
- Vision therapy group, Prism
- Where
- China
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Eye & ENT Hospital of Fudan University
Ocular Physiology, Regional Blood Flow
Does eNOS Gene Polymorphism Play a Role in the Maintenance of Basal Vascular Tone in the Choroid or Optic Nerve Head?
Nitric oxide (NO) is a potent endothelium-derived vasodilatator that plays a major role in the control of ocular blood flow. Endothelial NO synthase (eNOS) is one of three isoforms of NOS producing NO through hydroxylation of…
- Trial name
- NCT00708357
- Testing
- NG-monomethyl-L-arginine
- Where
- Austria
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Cataract Unilateral Pending Extraction, Anesthesia
Comparing Ropivacaine and Bupivacaine in DTFNB Anesthesia in Patients Undergoing Phacoemulsification
Deep topical fornix nerve block anaesthesia is now a known form of nerve block for cataract surgeries by phacoemulsification. In this study the investigators intend to compare ropivacaine and bupivacaine in various parameters…
- Trial name
- DTFNB (NCT02925832)
- Testing
- Deep Topical Fornix Nerve block anesthesia, Ropivacaine, Bupivacaine
- Where
- India
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Government Medical College, Haldwani
Anesthesia, Intraocular Pressure
Intraocular Pressure, Optic Nerve Sheath Diameter and Optic Perfusion Pressure of Minimal Low and High-Flow Anesthesia
The aim of this clinical trial is to determine the effect of minimal low-flow versus high-flow anesthesia on intraocular pressure (IOP) by non-contact tonometry, optic nerve sheath diameter (ONSD) by USG and optic perfusion…
- Conditions
- Anesthesia, Intraocular Pressure, Nephrolithiasis
- Trial name
- NCT06684704
- Testing
- minimal and high flow anesthesia
- Where
- Turkey (Türkiye)
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Elazıg Fethi Sekin Sehir Hastanesi
Multiple Sclerosis
Measuring Blood Vessel Density in the Optic Nerve of Multiple Sclerosis Patients With OCTA
The goal of this observational study is to learn about the effect of multiple sclerosis on the blood flow of the optic nerve of affected patients compared to normal subjects by OCTA. The main question it aims to answer is: 1.
- Trial name
- NCT07629804
- Testing
- Optical Coherence Tomography Angiography
- Where
- Egypt
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Fayoum University