Visual systems refer to the complex network of structures and processes that allow organisms to perceive and interpret visual information from their environment. This includes the eyes, which capture light, and the brain, which processes visual signals. Key components of visual systems include the retina, where light is converted into neural signals, and the visual cortex, where these signals are interpreted. In humans and many animals, visual systems enable the recognition of shapes, colors, and movement, facilitating navigation and interaction with surroundings. The study of visual systems encompasses various fields, including neuroscience, psychology, and optics, contributing to our understanding of how vision works and its importance in daily life.