Figure 4. Colour fundus photograph and optical coherence tomography (OCT) imaging of the right eye of a patient with dry age-related macular degeneration (patient B). (A) Small degree of geographic atrophy noted nasal to the fovea (short arrow). (B) Integrated reflectance image. Letters a and b indicate the position of the selected frames. (C) Horizontal scan from the StratusOCT showing multiple drusen (arrowheads). (D) Spectral domain OCT images. Increased transmission due to pigment loss (short arrows) is noted along with the drusen (arrowheads). The light source was a Ti:sapphire laser with an axial resolution of 3 μm. G/IPL, ganglion cell/inner plexiform layer; INL, inner nuclear layer; IS/OS, boundary between the inner and outer segments of the photoreceptors; ONL, outer nuclear layer; OPL, outer plexiform layer; RNFL, retinal nerve fibre layer; RPE, retinal pigment epithelium.