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. Author manuscript; available in PMC: 2014 Apr 1.
Published in final edited form as: Retina. 2013 Apr;33(4):762–770. doi: 10.1097/IAE.0b013e3182695bb3

Figure 4. Cross-sectional localization of pigment clumping within the neuroretina using optical coherence tomography (OCT).

Figure 4

Horizontal OCT B-scans were obtained in the retinal plane traversing an area of pigment clumping (indicated by a black horizontal line) in individual study eyes. (A) Example of a study eye with a small isolated island of pigment in the temporal perifoveal region. OCT demonstrates a band of hyperreflectivity (arrowhead) that originated from the RPE layer and extended into the inner layers of the retina. (B) Example of a study eye with multiple small islands of pigment clumping which on OCT are observed as a horizontal area of reflectivity within the retina at the level of the outer plexiform layer or inner nuclear layer (arrowhead). (C) Example of a study eye with a large contiguous area of pigment clumping which appears on OCT as a hyperreflective plaque on the inner aspect of the retina (arrowhead).