Light rays from illuminated objects fall on the cornea of the eye. Light rays from the cornea enter the lens through the pupil. Reflected from the lens to the retina. An inverted image of an object is formed on the retina. The resulting reflection stimulates the photosensitive (rod and cone) cells of the retina. This stimulus reaches the brain’s visual center (optic lobe) via the optic nerve. As a result, people see an upright reflection of the object.