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The author analyzes the changes observed in the central retinal veins of sixty-five eyes enucleated because of absolute glaucoma. His observations are made mostly from the reconstructed charts of the optic nerve and its blood vessels, which are made from serial sections according to his own ingenious method. These charts give the surface view of the disk and its blood vessels, as well as a profile view of the optic nerve and the central vessels. He shows by many illustrations of cases that in glaucoma the lumen of the central retinal vein is progressively narrowed even to complete occlusion by the following factors: 1. The lumen of the vein is constricted by a sharp bend which it suffers as it courses from the base of the glaucomatous cup into the axis of the optic nerve. 2. The intralaminar portion of the central artery is dilated in glaucomatous eyes