Clinical trials: Retinal Vascular
Diabetic Retinopathy
Combined Antioxidant Therapy on Oxidative Stress, Mitochondrial Dysfunction Markers in Diabetic Retinopathy
The present study aims to support previous research on antioxidant therapy effects in diabetic retinopathy outcome. The investigators intend to assess 180 patients with diabetic retinopathy in different stages (moderate, severe…
- Trial name
- NCT03702374
- Testing
- Combined antioxidant therapy
- Where
- Mexico
- Volunteers
- 132 people, healthy volunteers welcome
- Sponsor
- University of Guadalajara
Flicker-induced Vasodilatation
Effect of Breathing a Mixture of 92% Oxygen (O2) + 8% Carbon Dioxide (CO2) on Flicker Induced Blood Flow Changes in Ocular Perfusion
It has been shown that diffuse luminance flicker increases retinal and optic nerve head blood flow. This indicates that a neuro-vascular coupling between neural activity and blood flow exists in the retina as described previously…
- Trial name
- NCT00719342
- Testing
- Oxygen + Carbondioxide, full field flickering light at 12.5 Hz
- Where
- Austria
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Glaucoma and Ocular Hypertension, Diabetic Macular Edema
Effect of Dexamethasone Implant on Optic Disc
This study evaluates the effect of dexamethasone implant which is an intraocular corticosteroid on the optic nerve fibers. Retinal nerve fiber thicknesses and optic nerve head pitting rates were measured before and 6 months after…
- Conditions
- Glaucoma and Ocular Hypertension, Diabetic Macular Edema, Intravenous Drug Usage, Optic Disk Disorders
- Trial name
- NCT03927118
- Testing
- intravitreal dexamethasone implant application
- Where
- Turkey (Türkiye)
- Volunteers
- 43 people, healthy volunteers welcome
- Sponsor
- Bulent Ecevit University
Diabetic Retinopathy
Automated AI-based System for Early Diagnosis of Diabetic Retinopathy
In this pivotal trial, we aim to perform a prospective study to find the efficacy of iPredict, an artificial intelligence (AI) based software tool on early diagnosis of Diabetic Retinopathy (DR)in the primary care, optometrist…
- Trial name
- NCT05324189
- Testing
- Referable versus Non Referable Diabetic Retinopathy diagnostic test
- Where
- United States
- Volunteers
- 1,000 people, healthy volunteers welcome
- Sponsor
- The New York Eye & Ear Infirmary
Diabetic Retinopathy, Macular Degeneration
Analysis of Biomarkers From Patients With Chorioretinal Diseases
This study was conducted to investigate the levels of ocular biomarkers from the patients with chorioretinal diseases including diabetic retinopathy, retinal vascular diseases, age-related macular degeneration (dry and wet), and…
- Trial name
- NCT02026843
- Testing
- Chorioretinal diseases
- Where
- South Korea
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Kyungpook National University Hospital
Smokers
Effect of Smoking on Retinal Vessel Morphology and Functionality
The study aims at evaluating the effect of smoking activity on anatomy and functionality of retinal blood vessels using optical coherence tomography angiography (OCT-A) and dynamic vessel analysis (DVA).
- Trial name
- NCT07261176
- Testing
- Cigarette Smoking
- Where
- Italy
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- IRCCS San Raffaele
Diabetic Retinopathy (DR), Age-related Macular Degeneration (AMD)
Photobiomodulation & Ketogenic Diet for Treatment of Mid-periphery Retinal Disorders for Alzheimer's Disease Prevention
The study will explore the impact of photobiomodulation (PBM), pulsating at frequencies of red (660nm) and near-infrared (810nm)(NIR), concurrent with a ketogenic dietary protocol (serum ketones @ .5 - 2.0 mmol/L) to mediate…
- Conditions
- Diabetic Retinopathy (DR), Age-related Macular Degeneration (AMD), Mid-peripheral Drusen Formation, Diabetic Macular Edema (DME)
- Trial name
- NCT03859245
- Testing
- Photobiomodulation, Ketogenic diet
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Bristlecone Health, Inc.
Diabete Mellitus, Retina Vein Occlusion
Serum Cholinesterases, Paraoxonase, and Cardiovascular Risk After Intravitreal Bevacizumab
Bevacizumab, an anti-VEGF (vascular endothelial growth factor) agent used in the treatment of diabetic retinopathy and macular edema associated with retinal vein occlusion, is commonly administered in ophthalmology clinics…
- Conditions
- Diabete Mellitus, Retina Vein Occlusion, Age Macular Degeneration
- Trial name
- NCT07550777
- Testing
- blood test
- Where
- Turkey (Türkiye)
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Ataturk University
Diabetic Retinopathy, Neurodegeneration
Glycemic Control and Retinal Microvascular Changes
The goal of this prospective, observational study is to compare in the association of glycemic control and retinal microvascular changes in patients with type 2 diabetes mellitus (T2DM) without diabetic retinopathy (DR).
- Conditions
- Diabetic Retinopathy, Neurodegeneration, Blood Sugar; High
- Trial name
- NCT06150495
- Where
- South Korea
- Volunteers
- 259 people, healthy volunteers welcome
- Sponsor
- Seoul National University Hospital
Diabetic Retinopathy, Dyslipidemia
Dyslipidemia and Diabetic Retinopathy
The purpose of this study is to determine if the reparative cells of blood vessels called endothelial progenitor cells(EPC) are defective in people with diabetes.
- Trial name
- D&D (NCT03403283)
- Testing
- 15 subjects with Non Proliferative Diabetic Retinopathy(mild, moderate and severe). 15 subjects with Proliferative Diabetic Retinopathy, Healthy Controls 15 age matched control subjects
- Where
- United States
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- University of Alabama at Birmingham
Glaucoma, Retinal Vascular Disorder
Study of Human Ocular Hemodynamics by Holography Dopple
Prospective, interventional, non-randomized, open-label study, multi-center, Gehan-designed study with sequential inclusions in each subgroup, ranging from 4 subjects to a maximum 37 subjects per subgroup included
- Trial name
- HoLoEye (NCT06989996)
- Testing
- Images Acquisition
- Volunteers
- 148 people, healthy volunteers welcome
- Sponsor
- Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts
Macular Degeneration, Diabetic Retinopathy (DR)
Artificial Intelligence-assisted Diagnosis in Ophthalmology
This is a retrospective, multicenter, observational study designed to develop and validate an artificial intelligence (AI) system capable of detecting and classifying major ophthalmic diseases (glaucoma, cataract, diabetic…
- Conditions
- Macular Degeneration, Diabetic Retinopathy (DR), Glaucoma, Keratoconus
- Trial name
- AI-OPHTH-CR (NCT07497815)
- Testing
- No interventions
- Where
- 2 sites in Costa Rica
- Volunteers
- 15,000 people, healthy volunteers welcome
- Sponsor
- Marisse Masis-Solano
Age-Related Macular Degeneration, Diabetic Retinopathy
Defining Retinal Structures Using Hyperspectral Retinal Imaging
This study evaluates hyperspectral retinal imaging as a novel, non-invasive imaging technique to characterise retinal and optic nerve structures in healthy individuals and patients with eye disease.
- Conditions
- Age-Related Macular Degeneration, Diabetic Retinopathy, Glaucoma, Retinal Diseases
- Trial name
- NCT07555574
- Testing
- Hyperspectral camera
- Where
- Australia
- Volunteers
- 1,000 people, healthy volunteers welcome
- Sponsor
- Center for Eye Research Australia
Age-Related Macular Degeneration
The Role of Complement Factor H Polymorphism in the Regulation of Choroidal Vascular Tone in Young Healthy Subjects
Age related macular degeneration (AMD) is a multifactorial disease with a strong genetic component. Given that it is known that impaired regulation of choroidal vascular tone is present in patients with AMD, the current study…
- Trial name
- NCT02102880
- Testing
- the polymerase chain reaction (PCR)
- Where
- Austria
- Volunteers
- 220 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Age-related Macular Degeneration, Diabetic Retinopathy
Village-Integrated Eye Worker Trial II
The vast majority of blindness is avoidable. The World Health Organization (WHO) estimates that 80% of cases of visual impairment could be prevented or reversed with early diagnosis and treatment.
- Conditions
- Age-related Macular Degeneration, Diabetic Retinopathy, Glaucoma
- Trial name
- VIEW II (NCT03752840)
- Testing
- Visual acuity (presenting and pinhole), Optical coherence tomography (OCT), Intraocular pressure
- Where
- United States
- Volunteers
- 60,200 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Diabetic Retinopathy, Diabetic Macular Edema
Comparing Artificial Intelligence for Assisted Diagnosis of Diabetic Retinopathy
This study plans to compare the accuracy of artificial intelligence (AI)-assisted fundus images with other ophthalmic devices such as optical coherence tomography (OCT) and fundus fluorescence angiography (FFA) in the diagnosis…
- Trial name
- NCT06423274
- Testing
- fundus photography, optical coherence tomography, fundus fluorescence angiography
- Where
- China
- Volunteers
- 1,000 people, healthy volunteers welcome
- Sponsor
- Zhejiang University
Diabetic Retinopathy
Multicenter Diagnostic Clinical Performance Study For Automated Detection of Diabetic Retinopathy
This study is a retrospective study to assess the efficacy and accuracy of the EyeCheckup software in screening for diabetic retinopathy in healthcare settings.
- Trial name
- NCT05471986
- Testing
- Color Fundus Photography/Non-Mydriatic Opthalmic Cameras
- Volunteers
- 900 people, healthy volunteers welcome
- Sponsor
- Ural Telekomunikasyon Sanayi Ticaret Anonim Sirketi
Diabetes Mellitus Type 1, Diabetic Maculopathy
Diameter Changes of Retinal Vessels During Hypoxia
The primary objective is to study if an inhibition of nitric oxide and/or prostaglandins affect the diameter changes of retinal vessels observed during hypoxia. Diameter changes are studied using the Dynamic Vessel Analyzer.
- Trial name
- NCT01689090
- Testing
- COX inhibitor, L-NG-monomethyl arginine citrate, COX inhibitor + L-NG-monomethyl arginine citrate
- Where
- Denmark
- Volunteers
- 58 people, healthy volunteers welcome
- Sponsor
- University of Aarhus
Diabetic Retinopathy
Analysis of FAZ in Diabetic Retinopathy Using OCT Angiography
Study and assessment of characteristic changes in foveal avascular zone during different stages of diabetic retinopathy using OCTA.
- Trial name
- NCT05140304
- Testing
- OCT angiography
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Kareem Mohammad Ali
Age-Related Macular Degeneration, Diabetic Retinopathy
National Eye Institute Biorepository for Retinal Diseases
Background: To understand diseases of the retina and the eye, information is needed about people with and without such diseases. Researchers want to study these people and follow them over time.
- Conditions
- Age-Related Macular Degeneration, Diabetic Retinopathy, Von Hippel-Lindau Syndrome, Retinal Disease
- Trial name
- NCT01496625
- Where
- United States
- Volunteers
- 650 people, healthy volunteers welcome
- Sponsor
- National Eye Institute (NEI)