The Eye is a vital organ in the human body responsible for vision. It detects light and converts it into electrical signals that the brain interprets as images. The main parts of the eye include the cornea, lens, retina, and optic nerve. Each component plays a crucial role in focusing light and transmitting visual information. In addition to humans, many animals have eyes adapted to their environments. For example, birds often have excellent color vision, while cats can see well in low light. The structure and function of eyes can vary widely across different species, reflecting their unique needs for survival.