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To the Editor:
—In his interesting paper entitled "Development of Anterior Peripheral Synechiae in Experimental Acute Glaucoma" (Arch. Ophth.31:481 [June] 1944), Dr. M. Uribe Troncoso compares the formation of peripheral synechia in experimental glaucoma produced by injection of serum or pure or defibrinated blood into the anterior chamber of animal eyes with the acute glaucoma of human eyes. He concludes that experiments with animals show that the first step in the production of this increase in tension was not the mechanical obstruction of the channels of outflow by the base of the ciliary body and the root of the iris but a disturbance in the normal outflow of aqueous. These conclusions cannot be applied to the condition designated as acute glaucoma in man. In the latter condition there is an anatomic predisposition, namely, shallowness of the anterior chamber, which is always present. In the animal eyes studied by