Bird vision other vertebrates. The outer layer of the eye consists of the transparent cornea at the front, and two layers of sclera — a tough white collagen fibre layer which surrounds the rest of the eye and supports and protects the eye as a whole. The eye is divided internally by the lens into two main segments: the anterior segment and the posterior segment. The anterior chamber is filled with a watery fluid called the aqueous humour, and the posterior chamber contains the vitreous humour, a clear jelly-like substance. The lens is a transparent convex or 'lens' shaped body with a
Catholic theology of the body the consequence according to Didymus. He compares this with wine being mixed with water. The body has some functions for the soul. The body informs the soul of the sensual world around them. Didymus called the body the outer person and the soul the inner person. The outer person is perishable. The inner person is eternal. The heart of the person leads the person as a whole towards good or bad deeds. Didymus maintains freedom of will, which is however weakened through the fall of Adam of Eve. A person who uses his free will to be a spiritual person,