Figure 2. The effect of constant hyperbaric pressure on RGC survival with 25 and 5 µM of glutamate. A: RGCs were cultured under atmospheric and hyperbaric pressure, with or without 25 µM of glutamate. Glutamate of 25 µM induced-RGC death under atmospheric pressure conditions, which was deteriorated by hyperbaric pressure. B: RGCs were cultured under atmospheric and hyperbaric pressure, with or without 5 µM of glutamate. Glutamate of 5 µM did not induce RGC death under atmospheric pressure conditions. However, RGC death was induced by hyperbaric pressure. Data indicates mean±SD, *; p<0.05 by Dunnett’s test vs control (atmospheric pressure with glutamate), n=8.