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
Eye of the Tiger Eye of the Tiger "Eye of the Tiger" is a song composed by American rock band Survivor. It was released as a single from their third album of the same name "Eye of the Tiger" and was also the theme song for the film "Rocky III", which was released a day before the single. The song was written by Survivor guitarist Frankie Sullivan and keyboardist Jim Peterik, and was recorded at the request of "Rocky III" star, writer, and director Sylvester Stallone, after Queen denied him permission to use "Another One Bites the Dust", the song Stallone intended as the