Ocular function refers to the various processes that allow the eyes to see and interpret visual information. This includes the ability to focus light onto the retina, where photoreceptor cells convert light into electrical signals. These signals are then transmitted to the brain via the optic nerve, enabling us to perceive images. Key components of ocular function include pupil dilation and constriction, which regulate the amount of light entering the eye, and the lens, which adjusts its shape to focus on objects at different distances. Proper ocular function is essential for clear vision and overall visual health.