Figure 1.

(A) Demonstrates the typical hyperfluorescent annulus in RP. The green reticules indicate points of fluorescence that correspond to the 65th (B), 70th (C), 75th (D), 80th (E), and 85th (F) percentile of the maximal luminance point within the image. While margins were narrower in the 85th percentile, some regions, such as the inferior and nasal aspects of the annulus, would be excluded. The 70th percentile represents a balance between false positive and false negative values.