The vitreous chamber or postremal chamber occupies the posterior 4/5 of the eyeball. This chamber of consists of the space between the lens and the retina, and is occupied by the vitreous body.
This definition incorporates text from the wikipedia website - Wikipedia: The free encyclopedia. (2004, July 22). FL: Wikimedia Foundation, Inc. Retrieved August 10, 2004, from http://www.wikipedia.org