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April 1929, Vol 1, No. 4 >
ARTICLE | April 1929

THE FORMATION OF THE AQUEOUS HUMOR:  ITS RELATION TO INTRA-OCULAR AND VASCULAR PRESSURES

ARTHUR M. YUDKIN, M.D.
Arch Ophthalmol. 1929;1(4):435-446. doi:10.1001/archopht.1929.00810010453001.
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More than ordinary importance should be attached to accurate information regarding the composition of the intra-ocular fluid, because such knowledge must be depended on to furnish a clue regarding the origin and alterations thereof. The much debated question whether the aqueous humor represents a specific secretion by a special structure such as the ciliary body and its processes, or whether it is merely a fluid having its origin through relatively simple physical and physicochemical processes from the circulating fluids of the body—the blood and the lymph—hinges on a comparison of the composition of the various fluids involved and a consideration of the forces by which the ocular fluid is produced.

Some of the more important components, such as the sugar, the protein and the chloride, have been studied by several investigators, but the other constituents have scarcely been touched on. No one species of animal has

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