The eye lens is a convex lens system. A convex lens forms a real and inverted image when the object is placed beyond its focal point. In the case of the human eye, objects we see are typically located at distances greater than the focal length of the eye lens. The retina acts as the screen where the light rays converge. Therefore, the image formed on the retina is real (as it can be projected on a screen) and inverted with respect to the original object.