Fig. 1

a Schematic description of a triangle scleral flap in the filtering bleb, and the width of filtration opening (blue box). b-d. An OCT image of the filtering bleb in the C-scan image showing a triangle scleral flap (b), and in the horizontal image (c, d). The red and blue lines indicate the horizontal and vertical axes, respectively. The yellow line represents the z-axis for C-scan image (b). The cross points of the colored lines indicate filtration opening