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Fig. 1 | BMC Ophthalmology

Fig. 1

From: Comparison of glaucoma diagnostic ability of ganglion cell-inner plexiform layer according to the range around the fovea

Fig. 1

a A wide-angle scan with swept-sources optic coherence tomography (SS-OCT; DRI-OCT-1 Atlantis; Topcon, Tokyo, Japan) demonstrating the ganglion cell-inner plexiform layer (GCIPL) thickness for each 1-mm2 grid square of a 12 mm × 9 mm (horizontal × vertical) scan; and these 108 data were collected (green rectangles). We made zone classifications based on the scanned area (centered on the fovea) and the arcuate configuration of the papillomacular bundle. b Zone 1 (narrow area); the widest horizontal × vertical scanned length was 4 × 4 mm, with a total of 12 grid squares and 3 squares per quadrant. c Zone 2 (mid-sized area); the widest horizontal × vertical scanned length was 6 × 6 mm, with a total of 24 squares with 6 per quadrant included. d Zone 3 (wide area); the widest horizontal X vertical scanned length was 8 × 8 mm, and a total of 40 squares with 10 squares per quadrant were included. e Conventional area; 6 × 6 mm annulus area centered on the fovea

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