Early Detection of Incipient Retinal Pigment Epithelium Atrophy Overlying Drusen with Fundus Autofluorescence vs. Spectral Domain Optical Coherence Tomography

Figure 4

Comparison of time to secondary detection of incipient GA. FAF: fundus autofluorescence; nGA: nascent geographic atrophy; SD-OCT: spectral domain optical coherence tomography. (a) On the left-hand side, the Kaplan–Meyer curves of time to detection with SD-OCT when FAF detected atrophy earlier (blue) and with FAF when SD-OCT detected atrophy earlier (red) are shown. (b) On the right-hand side, the Kaplan–Meyer estimates compare if earlier detection was made by showing choroidal hypertransmission or nGA when SD-OCT detected the atrophy.

(a)

(b)