Final answer:
The lens of the eye provides the remaining focusing power needed for clear vision besides the cornea, accommodating for objects at different distances and working alongside the cornea to focus light on the retina.
Step-by-step explanation:
Besides the cornea, the lens of the eye provides the remaining focusing power necessary for vision. The cornea accounts for about two-thirds of the eye's total focusing power, due to the significant change in the speed of light when it passes from air into the cornea. The lens, through its ability to adjust its shape, provides the additional power required to focus light on the retina. Structural layers within the lens have varying indices of refraction, assisting in the precise focusing of light for clear vision. The retina and specifically the fovea within it, with its high density of light receptors, is where the real image formed by the cornea and lens is projected. The optic nerve then transmits the visual signals to the brain for interpretation.