This horizontally sectioned eyeball anatomy model is enlarged approximately 3 times, and is made of durable SOMSO-Plast. All size muscles of the eye are represented, and the optic nerve is shown up to where it enters the base of the skull. Separates into 9 parts: superior rectus and exterior straight muscle, upper half of the sclerotic membrane, choroid membrane and retina (2), vitreous humour, lens, lacrimal organs and eyelids and orbit. Mounted on a base. Size: 8-1/4" x 8" x 12-1/2".