Final answer:
The mechanism of sight involves the process of vision, from light entering the eye to the brain interpreting visual images.
Step-by-step explanation:
The mechanism of sight involves the process of vision, which is the ability of the eyes to detect and interpret light. Light enters the eye through the cornea and passes through the pupil, which adjusts its size depending on the intensity of light. The lens then focuses the light onto the retina at the back of the eye, where photoreceptor cells called rods and cones convert the light into electrical signals. These signals are transmitted through the optic nerve to the brain, which interprets them as visual images.