2. Cornea - The corneas main function is changing the image from the outside world into one that is upside down. Since it needs to be clear the cornea has no blood vessels.

3. Lens The lens focuses the light rays. Between the Cornea and lens the image coming in is “flipped” upside down. Our brains are used to this and can accommodate this image. The lens can also adjust to the image called Accommodation. This focuses the image for far and near objects. When you focus on a close object the lens gets rounder or fatter. When you focus on a far object the lens flattens out

4. Ciliary Muscle The ciliary muscle is part of a series of muscles around the eye. The ciliary muscle constricts to flatten out the lens so it can focus.

5. Vitreous Gel Vitreous Gel fills the inside of the eye. It provides structure for the eye and keeps key structures like the retina in place. This is where the floaters that some people see exist.

6. Retina (Ganglion Cells) Retina- absorbs light, processes images, and sends visual info to the brain. The retina is in fact an extension of the brain itself and processes the images itself

7. Pupil The pupil is a hole in the iris that allows light into the eye. The larger the pupil the less focused an image will appear.

8. Iris The iris expands or constricts to allow more light into the pupil. There are three basic colors to an iris: blue, brown, and green which is determined by genetics.

9. Receptors Serve as the first step in changing the light/image from the retina into an understandable format for the optic nerve to send to the occipital lobe.

10. Cone Cones are responsible for daylight vision and color. They are very acute. The main group of cones are in the center of the eye wall. The Fovea is an area of pure cones and our best visual spot

11. Rod Rods are in charge of night and peripheral vision. Bright light overwhelms these easily. They are mainly in the periphery of the eye wall. They are not as acute as cones

12. Foveal Point The point where there are the most cones receptors in the eye has the best and clearest vision. When we try and see something very small we automatically move it into the foveal point to see it better.

13. Optic Nerve The optic nerve sends information to the occipital lobe for processing. The optic disk is where the optic nerves of the eye come together and creates a blind spot. This is because there is no place for any cones or rods in that area.