Cornea: clear front window of the eye that transmits and focuses light into the eye.
Iris: colored part of the eye that helps regulate the amount of light that enters. The iris is estimated to contain more than 28,000 nerve endings and is approximately the size of a dime or 12mm. This is the thickest part of the collarette.
Pupil: dark aperture in the iris that determines how much light is let into the eye
Lens: transparent structure inside the eye that focuses light rays onto the retina
Retina: nerve layer that lines the back of the eye, senses light, and creates electrical impulses that travel through the optic nerve to the brain
Macula: small central area in the retina that contains special light-sensitive cells and allows us to see fine details clearly
Optic Nerve: connects the eye to the brain and carries the electrical impulses formed by the retina to the visual cortex of the brain
Vitreous: clear, jelly-like substance that fills the middle of the eye