Optogenetics as a Novel Therapeutic Approach for Ocular Disease

Optogenetics is a field that emerged with the goal of studying the physiology of nerve cells by selectively expressing opsins—channel proteins that can be activated by light exposure. Once the methodology was established, several research groups sought to express these proteins in damaged nerve tissue to restore proper signal transmission. Over the years, numerous efforts have been made to restore vision in patients with chronic degenerative diseases, particularly retinitis pigmentosa, with clinical trials yielding encouraging results. However, significant challenges remain, such as the difficulty of delivering the signal to specific retinal cells and the complexity of replicating the physiological activation of the target cells. As research continues, optogenetics remains a promising yet evolving field. This review aims to highlight the therapeutic advantages of optogenetics over currently available strategies and to promote further scientific exploration of this emerging discipline.