Calcium channel currents reduced by L-803,087 in isolated adult retinal ganglion cells (RGCs). (A) Calcium channel currents recorded during a voltage ramp from an isolated RGC in the absence (black) and presence of L-803,087 (gray, 10 nM). (B) The mean data show that L-803,087 produced a significant reduction of calcium channel current (n = 27; *P < 0.05, 2-way RM ANOVA vs. control).