Your eyes are made up of a number of components. The main ones are:
- Pupil: The black hole in the middle of your eye that allows light in
- Iris: The coloured part of your eye that controls the amount of light passing through the pupil
- Sclera: The white part of your eye
- Conjunctiva: A thin layer of tissue lining the eyelid and eyeball that protects your eye and keeps it moist
- Cornea: A transparent dome that protects the iris and pupil
- Crystalline lens: A transparent disc behind the iris
- Retina: The back of your eye that contains millions of photoreceptors (sensors that convert light into electric signals)
- Macula: A small spot near the middle of the retina that is responsible for central vision
- Vitreous humour: A jelly-like substance that fills the middle of your eye, giving it form and shape
- Optic nerve: The nerve at the back of your eye that carries signals from the retina to the brain
- Aqueous humour: A clear fluid in the space between the iris and the cornea to maintain eye pressure and give the front of your eye its rounded shape
