When light enters the eye it first enters through your cornea, the transparent protective coating over your eye. Next it will pass through the pupil which is the small opening in the middle of your iris, or colored part of your eye. The muscles in the iris help to protect the eye by expanding and contacting based on the brightness of the light in your environment helping you see much clearer in bright and dim …showed first 75 words of 543 total…

…showed last 75 words of 543 total…optic nerve to the optic chiasm, the point near the base of the brain where some fibers in the optic nerve form each eye cross to the other side of the brain. When all the right and left fibers are sorted they are then sent down neural pathways and eventually make their way to the left and right occipital lobes. Finally this is where the neural messages are interpreted and displayed as what you see.