CIRCULATION OF THE AQUEOUS

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Abstract
In previous papers Dr. Pierce and I1 have reported the experimental results in a systematic study regarding the mode of reabsorption of the various components of the intra-ocular fluid. These results may be summarized as follows: The reabsorption of water, of crystalloids and of colloids from the anterior chamber is in each instance effected by a separate and essentially unrelated mechanism. Colloids are removed by active phagocytosis on the part of the anterior layer of the cells of the iris, the endothelium. The removal of proteins is facilitated by the presence of proteolytic enzymes in the aqueous and the surrounding tissues. Crystalloid exchange takes place between the anterior chamber and the blood vessels of the iris by diffusion. The velocity of approach toward equilibrium in crystalloid content between the blood and the aqueous is controlled by the area of the iris (i. e., the state of contraction

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