Figure 1.

Retinal and choroidal thickness measurements. Using the calipers provided by the Spectralis® Heidelberg® software, manual retinal macular thickness measurements were performed at seven different locations centered on the fovea, 500 μm apart (top). A mean retinal thickness value was obtained from these measurements. On the same locations used to measure the retinal thickness, manual choroidal measurements were also performed using the calipers, and a mean choroidal thickness was obtained (bottom). Measurements were performed on both horizontal and vertical scans.