Figure 7.

Smudged OCT lens. Live Cirrus HD-OCT funduscopic images ((a)-(b)), retinal nerve fiber layer (RNFL) deviation maps ((c), (e)), and circular tomograms ((d), (f)) from the two eyes of the same individual. A smudged OCT lens artifact in the superonasal and superotemporal peripapillary regions of the right and the left eyes, respectively, approached the corresponding sectors of the scan circle. In the right eye, note on the RNFL deviation map the yellow “superpixels” indicating localized RNFL thinning (c), despite apparent signal uniformity on the circular tomogram (d). In the left eye, note the discrete superotemporal area of signal attenuation on the circular tomogram ((f) arrows), possibly affecting the corresponding RNFL thickness measures.