Cortical blindness

This trial tests whether a structured home-based exercise and education program, added to standard care, can improve quality of life and reduce leg symptoms in adults with chronic venous insufficiency—a condition where leg veins struggle to return blood to the heart. Around 120 p…

This early-stage trial is testing a brain implant designed to create artificial vision in people who are blind. Five participants will have a wireless device surgically placed in the part of the brain that processes vision. The study will check if the device is safe and whether i…

This pilot study is testing a brain implant that uses tiny electrodes to stimulate the visual cortex, aiming to create simple visual perceptions (phosphenes) in blind individuals. Five participants will undergo a small skull opening to receive the implant. The goal is to see if t…

Researchers at Georgetown University are testing whether a mild electrical brain stimulation called transcranial random noise stimulation (tRNS) can boost the effects of visual training in people who have lost part of their vision from brain damage. The study includes 30 adults w…

Researchers at the University of Rochester are testing a home-based computer program that trains people to detect visual stimuli in their blind field. The trial enrolls adults who have lost part of their vision because of damage to the brain's visual cortex, often from a stroke. …

Researchers are testing a device called the Pedal Pump, which pumps both feet for 10 minutes to mobilize the body and improve lymphatic flow. The trial enrolls 30 hospitalized patients with lower extremity edema caused by heart failure, chronic venous insufficiency, kidney diseas…

This trial tests whether a visual stimulation program using flickering black-and-white checkerboard patterns can improve visual function in children with low vision. The study includes children with mild to moderate low vision as well as those with severe or profound multiple dis…

This program provides comprehensive low vision rehabilitation services to children aged 3 to 21 with vision impairment. Participants are prescribed optical devices and trained to use them, with the goal of improving their visual functioning and ability to read. The program aims t…

This study tests whether 5 weekly sessions of eye exercises with real-time visual and audio feedback can improve how people with central vision loss use their peripheral vision. About 12 participants with bilateral central vision loss from macular degeneration will do saccadic an…

This pilot study tests whether a non-invasive headset that delivers mild electrical stimulation to nerves behind the ear can safely improve sleep in adults who are blind or severely sight impaired. Sixty participants will use the device for 30 minutes a day, five times a week for…

This study tests a new rehabilitation method for people who lost part of their vision after a stroke. It combines gentle electrical brain stimulation with visual exercises, sometimes using virtual reality, to try to speed up recovery of sight in the blind area. The study involves…

This study aims to see if a common vein treatment called radiofrequency ablation is safe and helpful for people aged 80 and older with severe chronic venous insufficiency. About 50 participants will receive the procedure and be followed for 6 months. The goal is to measure how we…

This study tests whether a home-based computer training program can improve vision in people who have lost part of their visual field due to stroke, traumatic brain injury, or brain tumor. Researchers will use brain scans to understand how the brain changes with training. The stu…

This study looks at how the brain changes after a stroke that causes vision loss. Researchers will use MRI scans to see which brain areas are damaged and how they respond to visual training. The goal is to better understand how the brain can adapt and restore some vision. About 1…

This study uses a virtual reality driving simulator to see how people with vision loss from a stroke steer a car. Researchers will compare driving accuracy between 40 participants with and without vision loss. The goal is to understand how the brain adapts to missing parts of the…

This study tests a smartphone-based tool called VisionWay that helps people with visual impairments choose the most accessible walking path before they start walking. Researchers will ask participants to walk different routes on a university campus and rate sidewalk features like…

This study looks at whether special vision training can improve how people with central vision loss from macular degeneration see and move their eyes. Researchers will train 60 adults aged 18 to 89 with severe vision loss to better detect and discriminate visual patterns. The goa…

This study is testing whether a special training program can help children with visual impairment learn better viewing strategies. The training involves six weeks of exercises that teach kids how to look in a structured way, zoom in and out, and tell objects apart. Researchers wi…

This study follows 60 infants at high risk for Cerebral Visual Impairment (CVI), a brain-based vision problem often missed until later childhood. Researchers will collect data from clinical exams, brain scans, and vision tests up to 24 months of age. The goal is to create a model…

This study looks at how older adults with and without vision problems step over obstacles of different heights and colors. Researchers want to understand how vision and eye movements affect walking to help prevent falls. About 200 adults who can walk on their own will take part.

This study from King's College London focuses on how to better identify early skin changes from chronic venous insufficiency (CVI) in people with dark skin tones. Researchers will interview patients about their experiences and test new assessment techniques, like using touch and …