Clinical trials: Change; Retina
Twin Pregnancy, Antepartum Condition or Complication, Retinal Vascular
Comparison of Posterior Ocular Changes Between Singleton Pregnancy and Multifetal Pregnancy.
It has been known that a pregnant women undergoes significant anatomical and physiological changes that mainly caused by hormonal and hematologic changes during pregnancy.
- Conditions
- Twin Pregnancy, Antepartum Condition or Complication, Retinal Vascular, Choroidal Effusion
- Trial name
- NCT04773561
- Testing
- Corneal tomography, optical coherence tomography and optical coherence tomography angiography
- Where
- Thailand
- Volunteers
- 166 people, healthy volunteers welcome
- Sponsor
- Khon Kaen University
Parkinson Disease
Retinal Nerve Fiber Layer Thickness Changes in Parkinson Disease: A Meta-analysis
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
- NCT01928212
- Testing
- Optical coherence tomography
- Where
- China
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- Yifan Feng
Eye Injury Trauma
Evaluation of Retinal Microvascular Change That May Develop in After Open Globe Injury
The aim of this study is to evaluate posterior segment changes in the non-traumatic eye after open globe injury.
- Trial name
- NCT05771467
- Testing
- Comprehensive Ophthalmologic Examination
- Where
- 2 sites in Turkey (Türkiye)
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Akdeniz University
Graves Disease, Graves Ophthalmopathy
Systemic Inflammation, Thyroid Autoimmunity and Neuroretinal Changes in Graves Disease
This retrospective observational study aims to evaluate the relationship between systemic inflammatory parameters, thyroid autoimmunity markers, and neuroretinal structures in patients with Graves disease.
- Trial name
- NCT07480720
- Where
- Turkey (Türkiye)
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Elazıg Fethi Sekin Sehir Hastanesi
Healthy Participants, Retinal Oxygen Extraction
Age-related Changes in Retinal Oxygen Extraction in Healthy Subjects
It has been found that several systemic and ocular diseases are associated with impaired retinal oxygen extraction. In the present study, retinal oxygen extraction will be measured in different age groups in order to identify age…
- Trial name
- NCT06643403
- Testing
- Oxygen 100% Gas for Inhalation
- Where
- Austria
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Ocular Injury
Study of Retinal Vascular Changes After Ocular Blunt Trauma
This study evaluates the retinal vascular features using optical coherence tomography angiography in patients that received ocular blunt trauma.
- Trial name
- NCT04546997
- Testing
- Optical Coherence Tomography Angiography
- Where
- Italy
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Federico II University
Choroideremia
The Dark-Adapted Retinal Function Response in Choroideremia (DARC) Study
Choroideremia (CHM) is an inherited retinal disorder that causes progressive vision loss, ultimately leading to complete blindness.
- Trial name
- DARC (NCT05045703)
- Testing
- Vitamin A palmitate
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Duke University
Pregnancy Related
Retinal and Choroidal Microvascular Changes During Pregnancy Period Detected With Optical Coherence Tomography Angiography
During pregnancy many physiological changes and adaptations occur.Hormonal, hematological and hemodynamic changes are responsible for most of the ocular adaptations.We are planning to compare the choroid and retinal blood flow…
- Trial name
- NCT04950855
- Testing
- Optical Coherence Tomography,Optical Coherence Tomography Angiography(Topcon)
- Where
- Turkey (Türkiye)
- Volunteers
- 86 people, healthy volunteers welcome
- Sponsor
- Akdeniz University
Periodontal Diseases, Periodontal Diseases Inflammation
Retinal and Choroidal Changes in Periodontal Disease
Advanced PeriodontitisIn this cross-sectional study, the relationship between periodontal disease severity and retinal and choroidal structural changes was evaluated using SD-OCT.
- Conditions
- Periodontal Diseases, Periodontal Diseases Inflammation, Retinal Thickening
- Trial name
- NCT07856901
- Where
- Turkey (Türkiye)
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Zeliha Başak Çakır Erdil
Age-related Macular Degeneration
The Effect of Eggs and Egg Products on Macular Pigment
Age-related macula degeneration (AMD, encompassing both dry and wet form), the late stage of Age-related maculopathy (ARM), is the leading cause of blindness in many developed countries in older persons (usually over 60 years of…
- Trial name
- NCT00527553
- Testing
- not enriched egg, lutein, zeaxanthin
- Where
- Netherlands
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Maastricht University Medical Center
Electroretinography
The Electroretinogram in Healthy and Glucose Intolerant Young Men
The purpose is to investigate the electroretinogram (ERG) in young, healthy men in the normoglycaemic and hyperglycaemic state before and after intervention with corticosteroids treatment, high calorie diet and exercise restraint.
- Trial name
- NCT01140932
- Testing
- Prednisolone, Lifestyle change
- Where
- Denmark
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Glostrup University Hospital, Copenhagen
Epiretinal Membrane, Pseudophakic Cystoid Macular Edema
"Cataract Surgery in Eyes With Epiretinal Membrane"
The purpose of the study is to evaluate retinal thickness change and the occurrence of central structural retinal changes after uneventful small-incision cataract surgery in eyes with asymptomatic early stages of epiretinal…
- Conditions
- Epiretinal Membrane, Pseudophakic Cystoid Macular Edema, Irvine-Gass Syndrome, Cataract
- Trial name
- NCT03404323
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- St John of God Hospital, Vienna
Safety
FDA Phase IV - Commitment - Retinal Function Study
Vardenafil (Levitra) and Sildenafil (Viagra) are drugs that are marketed for use in patients with erectile dysfunction. The purpose of this study is to find out if there are any changes in the eye after taking at least 15 doses…
- Trial name
- NCT00461565
- Testing
- Sildenafil, Vardenafil (Levitra, BAY38-9456)
- Volunteers
- 63 people, healthy volunteers welcome
- Sponsor
- Bayer
Ischemic Stroke
Correlation Between the Changes of Retinal Structure and Function and Ischemic Stroke
Ischemic stroke is the most common type of stroke, accounting for 60%-80% of all types of strokes, and is one of the leading global causes of death and severe disability.
- Trial name
- NCT05281887
- Where
- China
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Guangdong Provincial People's Hospital
Ehlers-Danlos Syndrome, Multiple Sclerosis
Vascular Fundus Changes in Patients With High Probability of Chronic Cerebrospinal Venous Insufficiency (CCSVI)
The investigators propose that evidence of chronic cerebrospinal venous insufficiency (CCSVI) may be evident in the vasculature of the fundus.
- Trial name
- NCT01356134
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Genetic Disease Investigators
Age-Related Macular Degeneration
Brain Connectivity in Age-Related Macular Degeneration
This study is to determine how cognitive deficits (e.g.,verbal fluency deficit) in patients with Age-Related Macular Degeneration (AMD) relate to specific aspects of brain and function.
- Trial name
- NCT01996215
- Where
- United States
- Volunteers
- 238 people, healthy volunteers welcome
- Sponsor
- Duke University
Retina Disease
Modified P200TE Data Collection
Images will be collected on the modified P200TE
- Trial name
- NCT07796230
- Testing
- imaging device
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Optos, PLC
Ischemic Stroke
Characterization of Retinal Microvascular and FAZ Changes in Ischemic Stroke and Its Different Types
The study aimed to access the microvascular changes in the superficial capillary plexus (SCP) and deep capillary plexus (DCP) in patients with ischemic stroke and its different types using optical coherence tomography angiography.
- Trial name
- NCT05243849
- Testing
- Optical Coherence Tomography Angiography
- Where
- China
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Peking University Third Hospital
Thyroid Associated Orbitopathy
OCT Angiography Drived Alterations in Thyroid-associated Orbitopathy
The aim of this observational study is to evaluate retinal microvascular alterations in patients with thyroid-associated orbitopathy (TAO) using optical coherence tomography angiography (OCTA).
- Trial name
- TAO (NCT07341347)
- Where
- Croatia
- Volunteers
- 68 people, healthy volunteers welcome
- Sponsor
- Osijek University Hospital
Type 1 Diabetes Mellitus With Artificial Pancreas Device
OCT and OCT-A Deep Learning in Diabetic Patients Wiht Artificial Pancreas Device
This study evaluates the ability of deep learning to improve the knowledge about structural and vascular retinal changes in diabetic patients undergoing artificial pancreas device, using optical coherence tomography angiography.
- Trial name
- NCT05809843
- Testing
- hybrid artificial pancreas systems (CSII)
- Where
- Italy
- Volunteers
- 11 people, healthy volunteers welcome
- Sponsor
- Federico II University