Fig. 1

Fundus photographs and fluorescein angiography (FA) of the right eye. Ophthalmoscopic examinations revealed posterior vessel dilation in both eyes, and an arterio-venous anastomosis (arrow) in the middle of the retina in the right eye (a). FA revealed a filling delay and peripheral arterio-venous anastomosis (arrows). No dye leakage was found in these vessels (b). Typical chorioretinitis was not seen. Six days after antiviral therapy with oral valgancyclovir, the retinal vessel dilation regressed completely, and the arterio-venous anastomosis was remarkably improved (arrows) (c, d). a Fundus photograph on the first day of life. b FA of the same eye on the first day of life. c Fundus photograph at 11 days old (6 days of antiviral therapy). d FA of the same eye at 11 days old (6 days of antiviral therapy)