Comparative provocative tests in glaucoma.

IT is the purpose of this paper to compare the results of the lability test of Bloomfield and Lambert (1945) with those of its two components, the venous-congestion test of Schoenberg (1929) (referred to as the "cuff test") and the coldpressure test of Kahler and Sallmann (1929) (referred to as the "ice test"), on a number of normal and glaucomatous eyes, in conditions which correspond as closely as possible. Further, the reaction is investigated of the same group of glaucomatous eyes to the water-drinking test of Marx (1925-28) and Schmidt (1928-31), the mechanism of which has been described in detail in a separate communication (Leydhecker, 1950). The results will be correlated to the spontaneous phasic variations of the ocular tension. These have been shown by Thomassen (1946) and Thomassen and Leydhecker (1950) to influence a number of provocative tests, all of which have in common the fact t.hat they react on the vascular system of the eye.