Components of the eye
Conjunctiva – The mucous membrane which protects and keeps the eye moist. It covers the front of the eye and lines the inside of the eyelids.
Iris – The iris is a circular structure in the eye, responsible for controlling the amount of light passing into the eye.
Crystalline lens – A transparent structure behind the iris which focuses light onto the retina of the eye.
Vitreous humor – A substance filling the middle of the eye which gives the eyeball shape and form.
Sclera – The sclera is the white outer layer of the eye, which protects the eyeball.
Optic nerve – The nerve that carries signals from the eye to the brain.
Aqueous humour – A fluid in between the cornea and the iris which maintains eye pressure and rounded shape to the front of the eye.
Pupil – The pupil the black hole located in the centre of the eye. It allows light to enter the eye and strike the retina.
Retina – A layer at the back of the eye containing cells(photoreceptors) that trigger nerve impulses to the brain through the optic nerve.