Correlations between Steady-State Pattern Electroretinogram and Humphrey Visual Field Analyzer Global Indices and Their Associations with Retinal Ganglion Cell Layer-Inner Plexiform Layer Thickness in Glaucoma Suspects

Figure 3

Schematic illustration of areas on the retina tested by different modalities. (a) Macular square area scanned by SD OCT. (b) Retinal area tested by HFA 24-2 and the demarcation of 54 test points across peripheral retina (point density is 6 degrees). (c) Steady state pattern electroretinogram (ss-PERG) stimulus superimposed on fundus photograph on the macular region. (d) Representation of ss-PERG stimulus superimposed on the macular region which roughly corresponds to the area covered by Humphrey field analyzer 10−2 strategy. The 68 test points of HFA 10-2 are demarcated (point density is 2 degrees).

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