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Comparison of foveal cone mosaics as imaged by adaptive-optics light ophthaloscopy in normal subjects and subjects with oligocone trichromacy and RGS9/R9AP-associated retinopathy. Normal (Left) and RGS9/R9AP-associated retinopathy (Right) subjects have a continuous cone mosaic across the foveal region. In contrast, a decreased cone mosaic is observed in oligocone trichromacy (Middle). Scale bar is 25 μm.
