Cornea: a clear dome over the iris—bends light to help the eye focus

Pupil: the black circular opening that lets light in

Iris: the coloured part—contains the muscles to contract or expand the pupil to control how much light is let in

Lens: behind the iris and pupil—works with the cornea to focus light correctly on the retina

Retina: light-sensitive tissue at the back of the eye— contains special photoreceptor cells called rods and cones that turn light into electrical signals

Rods: help us see in dim light

Cones: help us see bright light, colour, and detail

Vitreous humor: colourless, gel-like substance in between the lens and retina—helps with vision clarity and helps protect your eye from damage by absorbing the shock if you hit your head

Macula: specialized area of the retina that helps the eyes see fine details

Optic Nerve: transmits the electrical signals to the brain where your brain “develops” them into what you see