Open up nature for inner exploration. When soft foam models split, one side shows the name of each part. The other side is labeled only with letters so kids can quiz themselves. The model features realistic details and includes an activity guide with lots of facts and a reproducible eye diagram to label. Details: 5" diameter Features cornea, iris, pupil, retina, lens, optic nerve, vitreous humor, sclera, choroid, macula ciliary muscle, optic disc and zonules Made of durable soft foam Includes activity guide For ages 7 and up