Fibrous tunic of eyeball. From Wikipedia, the free encyclopedia. The sclera and cornea form the fibrous tunic of the bulb of the eye; the sclera is opaque, and constitutes the posterior five-sixths of the tunic; the cornea is transparent, and forms the anterior sixth.The term corneosclera is also used to describe the sclera and cornea together.ibrous tunic of eyeball. From Wikipedia, the free encyclopedia. The sclera and cornea form the fibrous tunic of the bulb of the eye; the sclera is opaque, and constitutes the posterior five-sixths of the tunic; the cornea is transparent, and forms the anterior sixth.
The philosophy as well as the religion of the Greeks found its first expression in poetry, philosophical speculation, properly so called, being preceded by the effort of the imagination to picture to itself the origin and the evolution of the universe.
The three greatest ancient Greek philosophers were Aristotle, Plato (a teacher of Aristotle) and Socrates (c. 470-399 BC), whose thinking deeply influenced Plato.Among them they transformed presocratic Greek philosophy into the foundations of Western philosophy as we know it.ristotle was born at Stageira, a colony of Andros on the Macedonian peninsula Chalcidice in 384 BC. His father, Nicomachus, was court physician to King Amyntas III of Macedon. It is believed that Aristotle's ancestors held this position under various kings of Macedonia.