Clinical Research Directory

AI-Powered Artificial Vision for Visual Prostheses

Visual impairment is one of the ten most prevalent causes of disability and poses extraordinary challenges to individuals in our society that relies heavily on sight. Living with acquired blindness not only lowers the quality of life of these individuals, but also strains society's limited resources for assistance, care and rehabilitation. However, to date, there is no effective treatment for man patients who are visually handicapped as a result of degeneration or damage to the inner layers of the retina, the optic nerve or the visual pathways. Therefore, there are compelling reasons to pursue the development of a cortical visual prosthesis capable of restoring some useful sight in these profoundly blind patients. However, the quality of current prosthetic vision is still rudimentary. A major outstanding challenge is translating electrode stimulation into a code that the brain can understand. Interactions between the device electronics and the retinal neurophysiology lead to distortions that can severely limit the quality of the generated visual experience. Rather than aiming to one day restore natural vision (which may remain elusive until the neural code of vision is fully understood), one might be better off thinking about how to create practical and useful artificial vision now. The goal of this work is to address fundamental questions that will allow the development of a Smart Bionic Eye, a device that relies on AI-powered scene understanding to augment the visual scene (similar to the Microsoft HoloLens), tailored to specific real-world tasks that are known to diminish the quality of life of people who are blind (e.g., face recognition, outdoor navigation, reading, self-care).

Developing Evidence-Based Cognitive Approaches to Improve Adjustment to Vision Loss

The goal of this study is to develop and pilot test a therapeutic strategy combining cognitive behavioral therapy (CBT) with mindfulness practices tailored for individuals adjusting to vision loss. The study will begin with focus groups to inform the design of the intervention. Participants will complete brief surveys on their background and experiences with vision loss prior to attending a focus group, and some may be invited to a second session to provide additional feedback before preliminary testing begins. In the pilot phase, participants will attend weekly group therapy sessions using the developed intervention and complete assessments before and after the program, including questions about vision status, demographics, and experiences with vision loss.

Early Feasibility Study of the Orion Visual Cortical Prosthesis System

This is an early feasibility study of a new device, the Orion Visual Cortical Prosthesis System. The device is intended to stimulate the surface of the visual cortex to induce visual perception in blind individuals.