The 66fit Giant Eye Anatomical Model is a jumbo size enlarged model ideal for demonstrating and teaching. Mounted on a plastic stand. Features Material: Washable PVC 6 times enlarged. Size: 15.5cm Mounted on base. Description The different parts of the eyeball model are detachable to show the following structures. 1) Tunica external: Showing cornea and sclera with attachments of ocular muscles and optic nerve. 2) Tunica media: Showing the iris, the ciliary body and the choroid. 3) Tunica internal is retina. 4) Refraction media: Showing the lens and the vitreous body.