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I have seen even in America not a few people blind in both eyes who might have retained the sight of the second eye had the surgeon advised a double sclerectomy when he first saw the case, despite the fact that the second eye was then to all appearances non-glaucomatous.

In cases of high tension, even a simple sclerectomy will allow ample filtration, owing to the gaping of the wound, while in cases without elevation of the tension, sclerectomy will be quite ineffectual.