This lecture covers the processing of visual information in the eye, focusing on the retinal structure and the pathway of visual information to the brain. It discusses the anatomy of the eye, the organization of the retina, and the biochemistry of photoreceptors. Additionally, it explores the different types of photoreceptors, their functions, and the optimization of visual acuity. The lecture also delves into the anatomy of the retina, color vision, and the structure of photoreceptors. Furthermore, it presents the treatment of visual impairments through retinal implants and cochlear implants, providing insights into their feasibility, functionality, and future perspectives.