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July 7, 1917


JAMA. 1917;LXIX(1):12-16. doi:10.1001/jama.1917.02590280014004

A study of life processes, even though we are not able to arrive at final conclusions, is always a subject of great interest. For the ophthalmologist a condition in which side by side with the normal functioning of an organ or a tissue may be seen a return to the elemental substances of which it is composed is peculiarly important, because in the eye alone, of all of the tissues of the body, he may follow Nature at work in her laboratory. He may see the blood vessels swelling in congested areas. He may observe the serous transudation, becoming in time a plastic exudate. If he cannot actually discover the blood vessel in the act of breaking, he can at least determine its location and disposition when a hemorrhage occurs. He is able to note the process of absorption or of disintegration of the transuded fluid, following it finally to