Fig. 1

Fundus fluorescein angiography (FFA) and spectral domain optical coherence tomography (SD-OCT). a, d The control fellow eye had no abnormal changes. b In the mid-phase, hyperfluorescence can be dectected at the ONH in PDT eye at 1 day post-AION. c In the late-phase, subdued fluorescence at ONH in the same PDT eye. e SD-OCT showed the swelling of the retina tissue of treated eyes at 3 days post-AION