Tuesday, July 7, 2009

Parts of the Eye and Definition

Conjuctiva: Protects the eye and supplies oxygen, nutrients and antibodies

Aqueous Humour: Maintains the shape of the front part of the eye and supplies nutrients, minerals and antibodies

Cornea: Controls and focuses of light entering the eye and sheilds it from dust and germs

Pupil: It regulates the amount of light that enters the eye

Iris: Controls the size of the pupil

Ciliary Body and Suspensory ligaments: They contract and relax when the eye confronts a close distance object and far distanced object

Lens: The lens, by changing shape, functions to change the focal distance of the eye so that it can focus on objects at various distances, thus allowing a sharp real image of the object of interest to be formed on the retina

Vitreous Humour: Holds the shape of the eye

Sclera: It Protects the eye

Retina: It receives the images from the outside of the eye

Choroid: Supplies blood, oxygen and minerals

Fovea Centralis: Focuses the images that come in the eye because of the mass concentration of cons and rods. It has low intensity light

Blind Spot: A place in the eye where light cannot be reached

Optic Nerve: Nerve that sends images to the brain

No comments:

Post a Comment