Table 1:

Correlations between retinal pigment epithelium-Bruch’s membrane distances at baseline and the annual square root enlargement rates of geographic atrophy in different regions.

Regions of interest	RPE-BM distance Mean ± SD (um)	Pearson’ r, p-value
R1 (0–300 μm)	11.09 ± 7.74	r =0.595, p < 0.001
R2 (300–600 μm)	9.33 ± 7.14	r =0.526, p = 0.001
R1+R2 (0–600 μm)	9.88 ± 6.90	r =0.571, p < 0.001
R3 (total scan area minus GA, R1, R2)	3.92 ± 3.33	r =0.264, p = 0.110
Total scan area minus GA	5.53 ± 3.89	r =0.407, p = 0.011

PRE = retinal pigment epithelium; BM = Bruch’s membrane; ER = enlargement rates; SD = standard deviation.