Figure 1.

(A) Swept source-OCT scan of the ONH of a glaucomatous eye. (B) Software view of the delineation of the ILM/anterior prelaminar surface (yellow line) and ALC surface (blue line). The prelaminar tissue thickness was quantified by (C) measuring the average distance between the anterior prelaminar surface (yellow dashed line) and the ALC (blue dashed line) in the region enclosed by the Bruch's membrane opening (black dashed lines). For the measurement of regions in which the ALC was visible, regions such as the area highlighted in pink were not included.