Your eye is a slightly asymmetrical globe, about an inch in diameter.

The front part which you can see includes:

Iris: The coloured part of the eye is the iris.

Cornea: A clear dome over the iris is the cornea.

Pupil: The black circular opening in the iris that lets light inside the eye is the pupil.

Sclera: The white portion of the eye is Sclera.

Conjunctiva: A thin layer of tissue that covers the entire front of your eye, except for the cornea is the conjunctiva.

Lens: The lens is a transparent biconvex structure in the eye that is located behind the iris and pupil.

Vitreous Humour: Also known as simply the vitreous. It is a clear, colourless fluid that fills the space between the lens and the retina of your eye. 99% of it consists of water and the rest is a mixture of collagen, proteins, salts and sugars.

Retina: The retina is the sensory membrane that lines the inner surface of the back of the eyeball. It is composed of several layers, including one that contains specialized cells called photoreceptors.

Rods & Cones: There are two types of photoreceptor cells in the retina.

Optic Nerve: The optic nerve is located at the back of the eye.

Macula: This is a small extra-sensitive area in the retina that gives you central vision.

Eye Pigment: The colour of the eye is created by the amount and type of pigment in your iris. Multiple genes inherited from each parent determine a person’s eye colour.