Is the retina part of nervous system?

Yes, the retina is part of the central nervous system (CNS). It is a thin, light-sensitive layer of tissue that lines the back of the eye and is responsible for converting light into electrical signals that are sent to the brain via the optic nerve. As part of the CNS, the retina contains specialized nerve cells called photoreceptors (rods and cones) that detect light and transmit visual information to the brain. Therefore, the retina plays a crucial role in the sense of sight.