16. Suspensory ligaments Ciliary muscle Lens Pupillary opening in front of lens The iris is circular and pigmented. It is two layers of smooth muscle that control the amount of light passing through the pupil and into the eye.
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26. 3. Accommodation of the eye for objects at different distances This diagram shows how light from afar is bent by the stretched lens to strike the retina, and how light from a closer source is bent even more sharply by the relaxed lens to strike the retina
62. 8. Visual pathways This scheme shows the flow of information from the eyes to the central connections of the optic nerves and optic tracts, to the visual cortex. Area V1 is the region of the brain which is engaged in vision .