Figure 5.

 Fundus photographs in red free illumination (upper left and middle) and automated perimetry (upper right) from the right eye of a 57 year old woman with a macular branch retinal vein occlusion compromising the drainage of a section of the right macula above the fovea. No foveal oedema was found at presentation (upper left) or at follow up 3 months later (upper middle). Perimetry threshold sensitivity values at follow up are presented using graphical encoding as per Humphrey standard. The perimetry spans an eccentricity of 30° in all directions from the point of fixation and is shown in retinal view to enable comparison with the fundus photographs. Threshold values encoded as per Humphrey standard, with eccentricity markers for every 10°. At presentation, oedema and haemorrhage were confined to an area above the fovea. All ophthalmoscopical visible lesions resolved within 3 months (middle). However a permanent relative arcuate scotoma was found corresponding to the most ischaemic part of the affected venous drainage area and an area inferotemporal to the ischaemic area—presumably caused by ischaemic injury to the retinal nerve fibres traversing the ischaemic area. Lower section shows transfoveal optical coherence tomograms (OCT2, vertical scan, nominal width 5.65 mm), from the right eye (left) and the healthy left eye (right) of the same subject 3 months after presentation. The uppermost OCT scan is a conventional single scan, whereas the middle image is obtained from averaging eight images. A reflection is seen from the foveal pit (white arrow). The affected region of the retina of the right eye demonstrated a disruption of the layered structure of the inner retina superior to the fovea (marked with a green arrow). In the figure the superior retina is seen to the right of the foveal pit.