PSYA01H3 Lecture Notes - Sclera, Retina, The Fluid
Document Summary
Humans do not sense all there is to sense: Humans" vision is good because we are not a physically strong predator. Iris - the colored part of your eye it is actually a muscle that controls the size of the pupil. Pupil - the black part in the middle of the eye the opening that allows light into the eyeball lights out! Sclera - the white part of the eye a tough membrane that serves as protection. Cornea - the fluid filled outer coating of the eye provides moisture and nutrients. Lens focuses the incoming light onto the retina. This lens is flexible and slight alterations in it can alter the focus of it, a process called accommodation (as an example, squint). Aqueous humor - this fluid nourishes the front of the eye. Vitreous humor - this fluid nourishes and supports the inner part of the eye. Retina the surface that the image lands on.
