-The image is formed on the retina when the photoreceptors are stimulated; the light rays pass through the conjunctiva; cornea; aqueous humour; pupil; lens; vitreous humour; and finally onto the retina; The image formed on the fovea centralis is small, upside down and virtual (not real);
-The photoreceptors are stimulated by light rays; initiating a nerve; which is sent to the brain; through optic nerve; for interpretation;
-The brain interprets the image as being upright and allocates its actual size;