Final answer:
The lens of the eye, along with the cornea, refracts light to form a real, inverted image on the retina, which is then perceived as an upright image by the brain.
Step-by-step explanation:
To create an image, the lens of an eye bends the rays of light passing through it to form a real, inverted image on the retina. The cornea and the lens work together to refract light, focusing it precisely on the retina, which acts like a screen at the back of the eye. The cornea provides approximately two-thirds of the eye's focusing power due to the significant change in the speed of light as it travels from air into the cornea. The lens adjusts to provide the remaining power necessary for clear vision, allowing us to see images sharply. This dynamic process of image formation is crucial for our visual perception, and any disruption in this system can lead to visual impairment.