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 Chorioid. 3. Tunica Internal Is Retina. 4. Refraction Media: Showing The Lens And The Vitreous Body. The Model Is Made Of PVC. Mounted On A Plastic Stand. 6 Times Enlarged. Size: 15.5 CM.