The term 'eyeball part' refers to two distinct parts of the eye, the cornea and the sclera. The cornea is a transparent layer that covers the front of the eye and helps to focus light onto the retina. The sclera is the white outer layer of the eye that provides protection and helps to maintain the shape of the eyeball. Both the cornea and the sclera are essential components of the eye and play an important role in vision.