Clinical trials: Change; Retina
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
Pituitary Adenoma
Long-term Follow up for Retinal Vascular Changes After Endoscopic Endonasal Pituitary Surgery.
This study investigates the retinal vascular features, using optical coherence tomography angiography, in patients during one year's follow up after the endoscopic endonasal surgery to remove an intra-suprasellar pituitary…
- Trial name
- NCT04546386
- Testing
- Endoscopic endonasal pituitary surgery
- Where
- Italy
- Volunteers
- 14 people
- Sponsor
- Federico II University
COPD Exacerbation, Physical Activity
Changes in Microcirculation and Functional Status During Exacerbation of COPD
This study investigates the influence of acute exacerbation of chronic obstructive pulmonary disease (COPD) on retinal microcirculation, on functional status and also investigates the prognostic value of retinal vessel caliber…
- Conditions
- COPD Exacerbation, Physical Activity, Retinal Vascular
- Trial name
- COPD-EX (NCT03250000)
- Where
- Belgium
- Volunteers
- 100 people
- Sponsor
- Hasselt University
Age-related Macular Degeneration
Global Atrophie Biomarker Evaluation Study (GABiE)
To investigate the use of microperimetry and SS-OCT in assessing the natural changes of retinal sensitivity and anatomy in the perilesional zone of geographic atrophy areas in patients with dry age-related macular degeneration.
- Trial name
- GABiE (NCT03935126)
- Testing
- Diagnostics
- Where
- 2 sites in United States, Switzerland
- Volunteers
- 3 people
- Sponsor
- Boehringer Ingelheim
Ocular Inflammation
PGE2 Levels in Patient Treated With NSAIDs
The aim of this study is to determine vitreous levels of nonsteroidal antinflammatory drugs (NSAIDs) and prostaglandinE2 (PGE2) in eyes scheduled for vitrectomy. All patients received the study drugs for 3 days before surgery.
- Trial name
- NCT03597867
- Testing
- Dicloftil, Nevanac, Indom
- Where
- Italy
- Volunteers
- 104 people, healthy volunteers welcome
- Sponsor
- University of Trieste
Diabetes Mellitus
Retinal Function in Relation to Long Term Changes in the Glucose Level
The purpose of this study is to measure the amplitude and implicit time of electroretinogram (ERG), darkadaptation and the calibre of retinal vessels before and after optimized medical treatment of diabetic individuals (a lower…
- Trial name
- NCT00973401
- Testing
- Insulin pump
- Where
- Denmark
- Volunteers
- 30 people
- Sponsor
- Glostrup University Hospital, Copenhagen
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
Uveitis, Macular Edema
Effects of Conbercept in Refractory Uveitic Macular Edema and VEGF
As a primary exploratory study, this study aims to evaluate the short-term effectiveness of intravitreal Conbercept injection in UME, and to explore the correlation between inflammatory factors like VEGF and the responsiveness to…
- Conditions
- Uveitis, Macular Edema, Vascular Endothelial Growth Factor, Effect of Drugs
- Trial name
- NCT04296838
- Testing
- intravitreal injection of Conbercept
- Where
- China
- Volunteers
- 5 people
- Sponsor
- Peking Union Medical College Hospital
Malignant Melanoma, Drug-Induced Retinopathy
Clinical and Functional Retinal Changes Associated With BRAF/MEK Inhibitor Therapy in Patients With Malignant Melanoma
Patients with malignant melanoma are increasingly treated with combined BRAF and MEK inhibitor therapy. Although this treatment has significantly improved survival outcomes, it has been associated with specific retinal changes…
- Trial name
- NCT07427953
- Where
- Slovenia
- Volunteers
- 14 people
- Sponsor
- Institute of Oncology Ljubljana
Diabetic Macular Edema, Diabetic Retinopathy
Early Anatomical, Physiological, and Clinical Changes in Diabetic Macular Edema After Intravitreal Aflibercept Injection
This is a one month pre post intervention study. Subjects with diabetic macular edema were given intravitreal anti VEGF (Aflibercept) injection.
- Conditions
- Diabetic Macular Edema, Diabetic Retinopathy, Clinically Significant Macular Edema
- Trial name
- NCT03453281
- Testing
- Aflibercept Injection [Eylea]
- Where
- Indonesia
- Volunteers
- 36 people
- Sponsor
- Universitas Indonesia
Epilepsy (Treatment Refractory), Epilepsy
Retinal OCT Changes and Biomarkers in Drug-Resistant Epilepsy
This prospective, longitudinal observational study investigates whether epilepsy involves a progressive neurodegenerative process.
- Trial name
- NCT07716930
- Where
- Turkey (Türkiye)
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- Kemal Tutkavul
Macular Holes
Macular Micro Vascular Changes Following Macular Hole Repair : Optical Coherence Tomography Angiography Study
The goal of this prospective interventional study is to to compare the micro vascular and structural changes between surgery with and without ILM flap to repair macular hole.
- Trial name
- NCT06233500
- Testing
- pars plana vitrectomy
- Where
- Egypt
- Volunteers
- 28 people
- Sponsor
- Fayoum University
High Altitude Retinopathy
Retinal and Choroidal Circulation Changes Following Rapid Ascent to a High Altitude Environment
This is a prospective observational study. The purpose is to explore the effect of high altitude hypobaric hypoxia on retinal microcirculation and the change of the thickness of the retina and choroid by optical coherence…
- Trial name
- NCT04491500
- Testing
- High attitude environment
- Where
- China
- Volunteers
- 13 people
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Retinal Disease
Changes in Retinal Nerve Fiber Layer Thickness Detected by OCT in Diabetic Retinopathy After Panretinal Photocoagulation
Panretinal photocoagulation reduces the risk of visual loss by 50% in patients with diabetic retinopathy. It is recognized that laser expansion into the retina may be associated with photoreceptor loss, retinal pigment epithelial…
- Trial name
- NCT03786146
- Volunteers
- 30 people
- Sponsor
- Assiut University
Diabetic Retinopathy
OCTA in Epivascular Glia After Dex Implant
The aim of this prospective study was for the first time, to analyze specific morphologic features in diabetic eyes with macular oedema, such as changes of the foveal avascular zone and the presence of epivascular glia, and see…
- Trial name
- NCT05600179
- Testing
- Dexamethasone intravitreal implant
- Where
- Italy
- Volunteers
- 38 people, healthy volunteers welcome
- Sponsor
- Federico II University
Retinal Disease
Modified Soft Contact Lens During Vitrectomy
This study compared a modified soft contact lens with balanced salt solution irrigation during pars plana vitrectomy performed with a noncontact wide-angle viewing system.
- Trial name
- NCT07807436
- Testing
- Modified Soft Contact Lens, Balanced Salt Solution Irrigation
- Where
- China
- Volunteers
- 46 people
- Sponsor
- Northwest University First Hospital (Xi'an No.1 Hospital)
Relapsing-remitting Multiple Sclerosis
A Proof-of-Concept Study to Correlate Retinal Nerve Fiber Layer Changes in Patients With Multiple Sclerosis Treated With Natalizumab or Interferon Beta 1-a
Phase IV, proof-of-concept, randomized, open-label, multi-center, two-arm, 9-month study to evaluate the neuroprotective effects of Natalizumab (TYSABRI®) or Interferon beta-1a (AVONEX®) treatments initiated at the time of…
- Trial name
- PRTOECT (NCT00771043)
- Testing
- TYSABRI and AVONEX
- Sponsor
- Biogen
Diabetic Retinopathy
Effect of Panretinal Photocoagulation on Optic Nerve Head Topography
The purpose of this study is to evaluate the optic nerve head changes consequent to panretinal photocoagulation done for diabetic retinopathy.
- Trial name
- PRP (NCT00767884)
- Where
- 2 sites in United States
- Volunteers
- 13 people
- Sponsor
- University of Nebraska
Age-Related Macular Degeneration
Visual Function Change in Wet Age-related Macular Degeneration Patients With Better Baseline Visual Acuity
Although the number of wet AMD patients with the better visual acuity is increasing, the visual improvement in patients with the better vision may not be so significant after anti-vascular endothelial growth factor (VEGF)…
- Trial name
- NCT06330220
- Testing
- Aflibercept Injection [Eylea]
- Where
- South Korea
- Volunteers
- 12 people
- Sponsor
- Seoul National University Hospital
Type 2 Diabetes Mellitus, Diabetic Retinopathy (DR)
Glycemic Velocity and Early Retinal Microvascular Change With GLP-1RA Versus SGLT2i Initiation in Type 2 Diabetes (GLIDE)
The GLIDE study looks at how the small blood vessels of the eye respond during the first months of a new diabetes medicine. Two widely used classes of glucose-lowering drugs, GLP-1 receptor agonists and SGLT2 inhibitors, are…
- Trial name
- GLIDE (NCT07723820)
- Testing
- GLP-1 Receptor Agonists, SGLT2 inhibitor
- Where
- Thailand
- Volunteers
- 126 people
- Sponsor
- Thammasat University Hospital