Clinical trials: Vision, Low
Diabetic Retinopathy, Sickle Cell Trait
Diabetic Retinopathy and Sickle Trait
To more clearly ascertain the relationship between ocular manifestations of sickle cell disease and diabetes, specifically; whether the presence of sickle cell trait exacerbates the disease progression of diabetic retinopathy.
- Trial name
- NCT00720317
- Where
- United States
- Volunteers
- 48 people
- Sponsor
- Medical University of South Carolina
Central Visual Impairment
Peripheral Reading
The purpose of this study is to evaluate reading performance in the visual periphery by simulating central vision loss using a computer-controlled gaze-contingent display with an eye tracker.
- Trial name
- NCT03640130
- Testing
- Gaze-contingent text enhancement
- Where
- United States
- Volunteers
- 6 people, healthy volunteers welcome
- Sponsor
- University of Houston
Myopia, Prevention and Control
Effectiveness of Digital Defocus Vision Training With Low-Concentration Atropine on the Prevention and Control of Myopia in Children: A Clinical Study
Based on existing theories of myopia development and progression, our preliminary work has leveraged the features of virtual reality (VR) technology to digitally simulate myopic defocus signals through image-based emulation.
- Trial name
- NCT07724210
- Testing
- For the experimental group,Virtual reality-based digital defocus training combined with 0.02% atropine eye drops, For the control group, one drop of 0.02% atropine eye drops was instilled into each eye at bedtime daily, combined with full-time wear of fully corrected multi-zone positive optical defocus (DIMS) spe
- Where
- China
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Beijing Tongren Hospital
Vision Impairment, Blindness
Assessment of the Validity, Reliability, and Feasibility of Two Smartphone Applications for Testing the Visual Acuity
Visual acuity (VA) is the most common measure of visual function globally. In clinical settings and during screening events, VA is an important measure to quantify changes in vision over time.
- Trial name
- NCT04936100
- Testing
- Assessment of distance and near visual acuity using "Vision Screening module" of "Easy Vision" application, Assessment of distance and near visual acuity using "Test Yourself module" of "Easy Vision" application, Assessment of distance and near visual acuity using "Peek Acuity" application
- Where
- Iran
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Shahid Beheshti University of Medical Sciences
Blindness
Sensory Substitution and Brain Plasticity Following Vision Loss
The goal of this clinical investigation is to learn how the brain responds when visual information is converted into patterns of sound or touch in blind and sighted participants.
- Trial name
- SenSubMRI (NCT07450677)
- Testing
- Electrotactile display (BrainPort), Vision-to-sound converter (AI Sight)
- Where
- 2 sites in United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Stanford University
Macular Edema (ME)
To Assess the Efficacy and Safety of Intravitreal Ranibizumab in People With Vision Loss Due to Macular Edema
To evaluate the efficacy and safety of 0.5 mg Ranibizumab intravitreal injections in adult patients with visual impairment due to macular edema (ME).
- Trial name
- NCT01846299
- Testing
- Ranibizumab
- Where
- 61 sites in Australia, Belgium and 17 more
- Volunteers
- 181 people
- Sponsor
- Novartis Pharmaceuticals
Diabetic Retinopathy, Macular Degeneration
Diabetic Retinopathy and Visual Function Study
The purpose of this study is to evaluate possible mechanisms of central visual loss in patients with diabetes mellitus. The visual loss of interest to be investigated is that associated with macular edema (prior to and following…
- Conditions
- Diabetic Retinopathy, Macular Degeneration, Vision, Subnormal
- Trial name
- NCT00001346
- Where
- United States
- Volunteers
- 100 people
- Sponsor
- National Eye Institute (NEI)
Optic Disk Drusen
Systematic Imaging Examination in ODD
To evaluate the diagnostic value of systematic ophthalmologic imaging examination in the diagnosis of embedded optic disc drusen (ODD) in adolescents with mild visual impairment.
- Trial name
- NCT03957642
- Where
- China
- Volunteers
- 20 people
- Sponsor
- Third Affiliated Hospital, Sun Yat-Sen University
Glaucoma, Age-related Macular Degeneration
Evaluation of New Head-mounted Visual Aids Among Patients With Low Vision
Glaucoma, age-related macular degeneration (AMD), retinitis pigmentosa, RP, diabetic retinopathy (DR) are the most common blinding eye diseases in the world.
- Conditions
- Glaucoma, Age-related Macular Degeneration, Retinitis Pigmentosa, Diabetic Retinopathy
- Trial name
- NCT06076720
- Testing
- New head-mounted visual aids
- Where
- China
- Volunteers
- 50 people
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Retinal Hemangioblastoma, Von Hippel-Lindau Disease
Retrospective Case Series of Trans-scleral Cryotherapy for Retinal Hemangioblastoma
Background: Retinal hemangioblastoma (RH) is a tumor. It grows from the retina in the eye. It can threaten a person s vision. Trans-scleral cryotherapy is used to destroy the tumors and minimize the long-term risks of vision…
- Trial name
- NCT04458935
- Where
- United States
- Volunteers
- 25 people
- Sponsor
- National Eye Institute (NEI)
ROP, Jaundice, Neonatal
Hyperbilirubinemia and Retinopathy of Prematurity in Preterm Infants: a Retrospective Study.
The goal of this retrospective observational study is to [learn about the correlation between hyperbilirubinemia and retinopathy of prematurity in preterm infants.
- Conditions
- ROP, Jaundice, Neonatal, Premature, Very Low Birth Weight Infant
- Trial name
- biliROP (NCT05806684)
- Testing
- ROP
- Where
- Italy
- Volunteers
- 1,586 people
- Sponsor
- Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico
Primary Open Angle Glaucoma (POAG), Istent Inject W
Trabecular Microbypass IStent in Patients with Glaucoma
The goal of this clinical trial is to assess the safety and efficacy of phacoemulsification combined with one trabecular micro-bypass stent implantation (phaco-iStent) versus phacoemulsification alone in a Taiwanese population…
- Conditions
- Primary Open Angle Glaucoma (POAG), Istent Inject W, Normal Tension Glaucoma (NTG)
- Trial name
- NCT06630546
- Testing
- first generation iStent (Glaukos, San Clemente, CA, USA) insertion, phacoemulsification
- Where
- Taiwan
- Volunteers
- 71 people
- Sponsor
- Yu-Ting Tsao
Visual Impairment, Amblyopia Suspect
DigiVis: Self-testing Vision App for Telephone Consultations
This trial aims to assess the accuracy and test-retest variability of a new digital app which enables community visual acuity testing without requirement of an trained examiner.
- Trial name
- NCT04482387
- Testing
- DigiVis visual acuity app
- Where
- United Kingdom
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Cambridge University Hospitals NHS Foundation Trust
Myopia
Correction of Myopia Evaluation Trial 2
The purpose of the study is to determine if progressive addition lenses (PALs) versus single vision lenses (SVLs) slow the progression of low myopia in children with poor accommodative responses (i.e., large accommodative lags)…
- Trial name
- COMET2 (NCT00320593)
- Testing
- Progressive Addition Lenses (PALs), Single Vision Lenses (SVLs)
- Where
- 8 sites in United States
- Volunteers
- 118 people
- Sponsor
- Jaeb Center for Health Research
Disabilities, Visual Impairment and Blindness (Excl Colour Blindness)
Study Protocol: The Jerte Valley as an Inclusive Outdoor Classroom. Smart and Active Tourism.
To promote the inclusion of people with disabilities, an outdoor intervention will be conducted involving physical activities with adolescents with and without disabilities.
- Trial name
- NCT07609459
- Testing
- Rafting, canoeing and kayaking, Divulgation
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Universidad de Extremadura
Optic, Atrophy, Hereditary, Leber
Efficacy Study of GS010 for the Treatment of Vision Loss up to 6 Months From Onset in LHON Due to the ND4 Mutation
The goal of this clinical trial is to assess the effectiveness of GS010, a gene therapy, in improving the visual outcome in participants with Leber Hereditary Optic Neuropathy (LHON) due to the G11778A ND4 mitochondrial mutation…
- Trial name
- RESCUE (NCT02652767)
- Testing
- GS010
- Where
- 7 sites in United States, France and 3 more
- Volunteers
- 39 people
- Sponsor
- GenSight Biologics
Refractive Error - Myopia Axial, Astigmatism
Refractive Accuracy of "2WIN" and Portable Autorefractors
Youth and some adults have photoscreening refractions and hand-held auto refraction before cycloplegia refraction during new and follow up eye examinations.
- Conditions
- Refractive Error - Myopia Axial, Astigmatism, Accomodation, Visual Impairment
- Trial name
- NCT04249505
- Testing
- "2WIN" Photoscreener, "Plusoptix A12", "Retinomax"
- Where
- United States
- Volunteers
- 708 people, healthy volunteers welcome
- Sponsor
- Alaska Blind Child Discovery
Visual Impairment
Cell Phone Application for Vision Assessment
The purpose of this study is to evaluate how visual acuity assessed with Peek Acuity (a cell phone application to check visual acuity) among preschool and school-aged children 3 to less than18 years of age (1) compares to the…
- Trial name
- NCT03212222
- Testing
- Peek Acuity, Standard Visual Screening
- Where
- United States
- Volunteers
- 111 people, healthy volunteers welcome
- Sponsor
- Duke University
Low Vision, Central Visual Impairment
Vision Rehabilitation Training With Multimodal Feedback in Central Vision Loss
Central vision loss from macular degeneration creates blind spots that impair reading, face recognition, and navigation. Individuals must learn to use peripheral vision, requiring retraining of eye movements.
- Conditions
- Low Vision, Central Visual Impairment, Macular Degeneration
- Trial name
- NCT07577219
- Testing
- eccentric viewing training with biofeedback
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- New England College of Optometry
Blindness
Evaluation of the Efficacy of the BrainPort Vision Pro on the Performance of Daily Activities in the Profoundly Blind French Population
The purpose of the study is to evaluate the effectiveness and safety of the BrainPort® Vision Pro, an electronic oral assistive device, in the performance of daily tasks by French persons who have residual vision limited to light…
- Trial name
- NCT04725760
- Testing
- BrainPort Vision Pro
- Where
- 7 sites in France
- Volunteers
- 125 people, healthy volunteers welcome
- Sponsor
- Wicab