Figure 4. The volume occupied by the electron lucent spaces of the JCT is not uniform upstream of the inner wall of SC. The average volume, expressed as a percentage, occupied by the optically empty, electron lucent spaces of the juxtacanalicular tissue (JCT) against various distances from the borders of the inner wall of Schlemm’s canal (SC). Error bars represent standard error. * p<0.05 when compared to 2.7 µm; **p<0.001 when compared to 2.7 µm.