Research Article

The Association between Macular Thickness and Axial Length in Myopic Eyes

Figure 1

An example and a schematic diagram of a macular optical coherence tomography (OCT) scan. The macular thickness is measured by 256 x 256 (vertical x horizontal) axial scans in the macular region. Macula is divided into 3 concentric rings: the innermost 1.0-mm diameter ring represents the fovea, 3.0mm diameter ring represents the inner macular area, and the outermost 6.0mm diameter ring represents the outer macular area. The value of each sector is reported as averages from each measurement. We additionally obtained thickness difference indices which are the values of thickness differences obtained by subtracting the foveal thickness from that of other macular sectors to identify contour of macula. F, fovea; S, superior; IS, inner superior; OS, outer superior; IN, inner nasal; ON, outer nasal; II, inner inferior; OI, outer inferior; IT, inner temporal; OT, outer temporal.