Human eye of the size of the pupil, regulation and suppression of the hormone melatonin and entrainment of the body clock. The eye is not shaped like a perfect sphere, rather it is a fused two-piece unit, composed of the anterior segment and the posterior segment. The anterior segment is made up of the cornea, iris and lens. The cornea is transparent and more curved, and is linked to the larger posterior segment, composed of the vitreous, retina, choroid and the outer white shell called the sclera. The cornea is typically about 11.5 mm (0.3 in) in diameter, and 1/2 mm (500
Guild Wars: Eye of the North 40 new armor sets, and 10 new "heroes", in addition to the new items, weapons, and titles added as usual in every "Guild Wars" campaign. It is in part intended to act as a bridge from "Guild Wars" to "Guild Wars 2" and introduces the new races of the "Norn" (dwellers on the icy slopes of the Shiverpeak Mountains to the north) and "Asura" (inhabitants of the southern part of the Maguuma Jungle), both of which would later become playable in the sequel. "Eye of the North" continues the "Prophecies" story, which is told in three acts. In Act I,