Relier Pairs The eyesVersion en ligne The eyes par Alba Castellano Navarro 1 Eyelashes 2 Lacrimal glands 3 Fovea 4 Pupil 5 Eyelid 6 Sclera 7 Optic nerve 8 Aqueous humour 9 Retina 10 Vitreous humour 11 Cristaline lens 12 Eyebrows 13 Iris Are hairs that stop sweat from entering the eye. It is an elastic, transparent, biconvex structure behind the iris. It is the hole in the center of the iris. Is the opaque, white outer layer. The front part (cornea) is transparent. Are folds of skin that are opened and closed by the eye orbit muscles. They prevent the eyeball from drying out and stop particles from entering. It is transparent, gelatinous fluid filling the eyeball. It is a transparent fluid between the cornea and the crystalline lens. Is a circular structure. Its colour varies from person to person. It transmits the information to the brain. Produce tears, which clean the eye and keep it moist. They also destroy bacteria. Is an area of the retina with many cones. It is responsible for sharp vision. Are hairs that grow out of the eyelids. They limit access to light and stop particles from entering the eyes. It is the internal layer of the eyeball that contains photoreceptor cells called cones and rods.