Figure 2
From: Anterior Optic Nerve Head Perfusion is Dependent on Adjacent Parapapillary Choroidal perfusion
Serial ICGA images on the left eye of a glaucoma patient. (A) Infrared fundus image acquired before the ICGA. (B) Dye appearance in the parapapillary choroidal arterioles is just visible (yellow arrows). (C) Dye filling is seen in the nasal and temporal sectors (green arrows) of the optic nerve head (ONH). Centripetal microvessels supplying the ONH are discernible (inset). (D) The dye filling is more clearly seen in the nasal and temporal sectors of the ONH together with the supplying microvessels (inset). However, it is not yet seen in the superior and inferior sectors. Centripetal microvessels are not visible in those regions. (E) Image obtained at the time of peak ONH filling. The dye is now seen throughout the ONH, and centripetal microvessels are now visible in all sectors (see the magnified image shown in G). (F) Late-phase image. The ONH and parapapillary area are now hypofluorescent. (G) Magnified view of the temporal ONH at the time of peak ONH filling. Abundant centripetal microvessels are evident between the choroid and the ONH.
