Light sensation refers to the ability of the human eye to perceive light through specialized cells called photoreceptors. These cells, located in the retina, convert light into electrical signals that are sent to the brain. The brain then interprets these signals, allowing us to see and experience different colors and brightness levels. The process of light sensation is essential for vision and is influenced by various factors, including the intensity and wavelength of light. Color vision is a key aspect of light sensation, enabling us to distinguish between different colors based on how light interacts with objects and surfaces.