The visual system is a complex biological process and technological suite responsible for sensing light and translating those photonic signals into electrical neural impulses. This process begins when light enters the specialized structures of the eye, where it interacts with photoreceptor cells to generate chemical signals. These signals are then converted into electrical patterns that travel along the optic nerve to the brain. Within the visual cortex, the raw electrical data is processed through sophisticated pathways, allowing for the interpretation of spatial relationships, color, movement, and depth. Modern technology supports this system through various imaging devices and optical instruments, which amplify, record, or reconstruct visual information for diagnostic or functional purposes.