Figure 1

Scatter plot of fundus autofluorescence rank vs. weeks of corrected gestational age. Rank 1: On the optic nerve head (ONH) was visible; rank 2: only the ONH and peripapillary vessels/vascular arcade (PP/VA) were visible; and rank 3: the ONH + PP/VA and equatorial vessels (EqV) were visible. Spearman’s correlation: r = 0.714 (P = 0.006).