How is the aqueous produced ? The original theory was that it was secreted by the glandlike epithelium of the ciliary body. This theory was based on the anatomic appearances and on the analogy of the action of such glandlike structures elsewhere in the organism. In natural history analogy is a powerful argument. In any field of human endeavor it is a powerful argument. One must recognize that nature loves uniformity and that in everything she does (not least in the physiologic field) she has an objective and has her method of reaching that objective. These are fundamental facts with which everything else must come into line. When nature's methods are discovered they are found to be transcendently grand.
The secretion theory, I presume, would never have been questioned had it not been for the high pressure in cases of glaucoma (up to 40, 50 or 60 mm. of
SMITH H. THE AQUEOUS: ITS GENERATION, FUNCTIONS AND CIRCULATION. Arch Ophthalmol. 1936;15(1):40–46. doi:10.1001/archopht.1936.00840130050005
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