Feasibility Study of a Wireless Cortical Visual Prosthesis Implant for Adults with Acquired Blindness

What this Trial Is About

Researchers are investigating the feasibility of producing artificial vision in people who are blind by using a device called the Intracortical Visual Prosthesis ICVP. This study aims to test the safety of the ICVP system and evaluate whether electrical stimulation of the brains visual processing areas can create visual percepts. The study involves participants with no light perception or very limited vision who have been blind for at least one year and have a history of normal or near-normal vision in early life. The intervention involves implanting wireless floating microelectrode arrays WFMAs into the visual cortex on one side of the brain. These devices deliver wirelessly transmitted electrical stimulation intended to induce artificial vision. Each participant will have multiple WFMA devices implanted. After surgical recovery, participants will undergo weekly testing for one to three years to assess the ability of electrical stimulation to generate visual percepts and evaluate the devices safety and efficacy. Participants will attend regular testing sessions to measure visual perception responses to stimulation and monitor safety outcomes. Researchers will perform assessments from two weeks after surgery through the entire device use period, up to three years. The primary outcome is the safety of the WFMA-based cortical interface, while secondary measures evaluate its effectiveness at producing visual percepts. The study includes video and audio recordings, cognitive and spatial functioning tests, and MRI scans. Participant involvement may last up to three years, with ongoing monitoring throughout the study.

A Phase I Feasibility Study of an Intracortical Visual Prosthesis (ICVP) for People With Blindness