Sight is one of the five senses that allows humans and many animals to perceive their surroundings through light. It involves the eyes detecting light waves, which are then converted into electrical signals sent to the brain. The brain interprets these signals, allowing us to recognize shapes, colors, and movements. This process is essential for navigation, communication, and understanding the environment. The ability to see is primarily facilitated by the retina, a layer of cells at the back of the eye that contains photoreceptors. These photoreceptors, known as rods and cones, respond to different light intensities and colors. Together, they enable us to see in various lighting conditions and appreciate the beauty of the world around us.