Melin CS, et al. - In this study, researchers investigated the data to generate a method to calculate OCT of the optic nerve head pigment epithelium central limit-inner limit of the retina minimal distance. They recorded the estimated variance for segmentations and angles, 130 μm2 and 1280 μm2, respectively. They considered the average 8 segmentations and obtained a 95 % confidence interval for mean PIMD-2π, 212 ± 10 μm (df=7). They calculated the coefficient of variation for segmentation at 0.05. They recorded the within-subject variance for captured volumes and for segmentation within volumes, 10 μm2 and 50 μm2, respectively in the glaucomatous eyes.