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The colored vertical lines in (B) mark the location of the local maxima of the RNFL profile from one of the control individuals. The locations of these lines were noted on the scale in (C) and these locations were transferred to the fundus images in (A) and (B) using a protractor. The locations of the STA and STV and the ITA and ITV are shown in (D). Veins and arteries were located with the aid of a fundus photograph (E).
