Clinical trials: Ocular Physiology
Cognition Disorders
Impact of Glasses for Vision Problems on Cognitive Function in Rural Older Adults
The aim of this project is to explore whether vision correction can effectively slow cognitive decline in older adults. The primary question it seeks to answer is: Can providing free near and/or distance vision correction glasses…
- Trial name
- CLEVER (NCT06836440)
- Testing
- Free Prescription Glasses
- Where
- China
- Volunteers
- 964 people, healthy volunteers welcome
- Sponsor
- Yuju Wu
Macular Pucker, Macular Hole
Membrane Blue Versus Infracyanine Green
To compare possible toxicities of membrane blue and infracyanine green in vivo by macular function and peripheral visual field.
- Trial name
- NCT00555269
- Volunteers
- 30 people
- Sponsor
- The Ludwig Boltzmann Institute of Retinology and Biomicroscopic Laser Surgery
Diabetic Retinopathy, Diabetic Macular Edema
Diabetic Retinopathy And the Myvisiontrack® (DRAMA) Study
The purpose of this study is to determine the effect of enhancements to the myVisionTrack® in regards to patient compliance and test-retest variability.
- Trial name
- DRAMA (NCT01728883)
- Testing
- Home vision monitoring using myVisionTrack®
- Where
- 2 sites in United States
- Volunteers
- 60 people
- Sponsor
- Vital Art and Science Incorporated
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
Ocular Physiology, Optic Disk
Role of Endothelin- and Nitric Oxide-system in the Regulation of Optic Nerve Head Blood Flow During Changes in Ocular Perfusion Pressure
Autoregulation is the ability of a vascular bed to maintain blood flow despite changes in perfusion pressure. The existence of an effective autoregulation in the optic nerve circulation has been shown in animals and humans.
- Conditions
- Ocular Physiology, Optic Disk, Regional Blood Flow
- Trial name
- NCT00406731
- Testing
- NG-monomethyl-L-arginine (L-NMMA), Endothelin-1 (ET-1), Laser Doppler flowmetry
- Where
- Austria
- Volunteers
- healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Proliferative Diabetic Retinopathy - High Risk
Ultra-Widefield Fluorescein Angiography-Based Targeted Retinal Photocoagulation Versus Conventional Panretinal Photocoagulation in the Preservation of Visual Function and Regression of Proliferative Diabetic Retinopathy
Proliferative diabetic retinopathy is a vision-threatening disease that can lead to irreversible visual loss. The treatment options for proliferative diabetic retinopathy are anti-VEGF injection and retinal photocoagulation.
- Trial name
- NCT06653361
- Testing
- Green laser
- Where
- Pakistan
- Volunteers
- 120 people
- Sponsor
- Hayatabad Medical Complex
Age-related Macular Degeneration
Effects of Lutein and Zeaxanthin Supplementation on Early Age-related Macular Degeneration
This study is to investigate the protective effects of supplemental lutein and zeaxanthin on early age-related macular degeneration (AMD) patients in China.
- Trial name
- NCT01528605
- Testing
- low lutein, high lutein, lutein plus zeaxanthin
- Where
- China
- Volunteers
- 168 people
- Sponsor
- Peking University
Osteoarthritis of the Knee, Coagulopathy
Trial to See if Topical Pennsaid for Knee Pain Affects Coagulation Values in Patients Who Are Also Taking Anticoagulants
The purpose of this study is to see if using a topical nonsteroidal antiinflammatory drug (Pennsaid) to treat osteoarthritis knee pain will affect coagulation values in patients who are also taking anticoagulant or antithrombotic…
- Trial name
- ATCCTCP-1 (NCT01511939)
- Testing
- Pennsaid
- Where
- United States
- Volunteers
- 22 people
- Sponsor
- Nathan Wei, MD, FACP, FACR:
Glaucoma
Reproducibility of Retinal Nerve Fiber Layer Thickness Measurements Using the Eye Tracker and Retest Function of Spectralis® SD-OCT in Glaucomatous Eyes and Healthy Controls
PURPOSE. To evaluate the impact of self-acting eyetracking and retest software on the reproducibility of retinal nerve fiber layer (RNFL) thickness measurements in glaucoma patients and healthy control subjects using Spectralis®…
- Trial name
- NCT01228721
- Testing
- Spectralis® SD-OCT, Heidelberg Engineering GmbH, H
- Where
- Switzerland
- Sponsor
- University of Zurich
Insomia Disorder
A Trial to See if Daridorexant Can Help Adults and Elderly People With Insomnia Sleep Better During the Night and Function Better During the Day
The purpose of this clinical trial is to collect more data about the effect of daridorexant in adults and elderly people with insomnia disorder.
- Trial name
- DARI-DREAM (NCT07843329)
- Testing
- Daridorexant
- Where
- 9 sites in United States
- Volunteers
- 344 people
- Sponsor
- Idorsia Pharmaceuticals Ltd.
Age-Related Macular Degeneration
Improving Function in Age-Related Macular Degeneration
This randomized, controlled clinical trial will test the efficacy of Problem-Solving Treatment (PST) to improve vision function in older persons with age-related macular degeneration (AMD).
- Trial name
- IF-AMD (NCT00572039)
- Testing
- PST, ST
- Where
- United States
- Volunteers
- 241 people
- Sponsor
- Thomas Jefferson University
Diabetic Macular Oedema
Quantification of Rising the Osmotic Pressure in Diabetic Intraretinal Fluid Accumulation (Diabetic Macular Oedema)
Diabetic macular oedema is characterized by fluid accumulation in the retinal tissue from leaking retinal vessels, the capillaries. This state can lead to severe visual loss and blindness.
- Trial name
- NCT00333671
- Testing
- Glycerol
- Where
- Denmark
- Volunteers
- 15 people
- Sponsor
- Glostrup University Hospital, Copenhagen
Cataract, Astigmatism
Wavefront Analyzes and Visual Performance of Three Multifocal Intra-ocular Lenses
The purpose of this study is to determine if differences in the design of multifocal intra-ocular lenses would mean different values of higher-order aberrations and different performance in objective parameters such as modulation…
- Trial name
- IOL (NCT00876707)
- Testing
- Tecnis implant, ReSTOR implant, ReZoom implant
- Where
- Brazil
- Volunteers
- 60 people
- Sponsor
- University of Sao Paulo
Visual Health of Virtual Reality
Developing and Validating VR-Enabled Ophthalmic Clinics: A New Paradigm for Visual Function Testing
This study aimed to design and validate a VR-based ophthalmic clinic that replicates traditional tests of visual acuity, stereopsis, and contrast sensitivity within an immersive digital environment.
- Trial name
- NCT04530773
- Testing
- Watch VR movies/ Play VR games
- Where
- China
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Cortical Visual Impairment, Visual Function
Exosomes Effect on Visual Function in CVI
The goal of this observational study is to learn about the effects of nazally applied exosome treatment on visual functions in children with Phase 1 Cerebral visual impairment (CVİ).
- Trial name
- NCT07492966
- Testing
- Molecularly matched therapy
- Where
- Turkey (Türkiye)
- Volunteers
- 32 people
- Sponsor
- Hatice Semrin Timlioglu İper
Age Related Macular Degeneration (AMD)
A 16 Week Evaluation of the Novartis Health Management Tool (HMT) in Age Related Macular Degeneration (AMD)
This is a prospective pilot study to evaluate the usability and applicability of a self monitoring test of visual function with the handheld Health Management Tool (HMT) to remotely monitor neovascular Age Related Macular…
- Trial name
- NCT01542866
- Testing
- Health Management Tool (HMT)
- Where
- 23 sites in United States
- Volunteers
- 160 people
- Sponsor
- Novartis Pharmaceuticals
Physiology
Effects of Intravenous Clonidine on Ocular Blood Flow and Intraocular Pressure
Background Clonidine, a derivate of Imidazol, is an antihypertensive drug. It acts by stimulating adrenergic receptors on nerves in the brain and Imidazol-receptors.
- Trial name
- NCT00279253
- Testing
- clonidine (drug) intravenously
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Presbyopia
Luminous Efficiency Function V(λ)' of Patients That Underwent Pseudophakic Presbyopic Corrections With EDOF IOLs
Primary objective of this study is to introduce a modified luminous efficiency function that addresses the distinct total eye light transmittance of patients who underwent pseudophakic presbyopic correction with extended-depth of…
- Trial name
- V(λ)'_EDOF (NCT07077967)
- Testing
- Phacoemulsification with EDOF IOLs
- Where
- Greece
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Democritus University of Thrace
Hemianopsia, Homonymous, Brain Injury
Biofeedback for Hemianopia Vision Rehabilitation
Patients with brain injury secondary to stroke, surgery, or trauma frequently suffer from homonymous hemianopia, defined as vision loss in one hemifield secondary to retro- chiasmal lesion.
- Conditions
- Hemianopsia, Homonymous, Brain Injury, Stroke, Brain Tumor
- Trial name
- NCT05397873
- Testing
- Biofeedback training
- Where
- Canada
- Volunteers
- 32 people
- Sponsor
- University Health Network, Toronto
Non-exudative (Dry) Age-related Macular Degeneration (AMD)
HELP Therapy for Dry AMD
This is an open-label, single center clinical investigation to evaluate the efficacy and safety of Heparin-induced Extracorporeal Lipoprotein Precipitation (H.E.L.P.) Therapy as a treatment for non-exudative (dry) Age-related…
- Trial name
- HELPuc (NCT01840683)
- Testing
- H.E.L.P. therapy (H.E.L.P. Plasmat Futura System)
- Where
- Canada
- Volunteers
- 22 people
- Sponsor
- B.Braun Avitum AG