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Dry eye. Cirrus HD-OCT retinal nerve fiber layer (RNFL) deviation maps ((a)-(b)), circular tomograms ((c)-(d)), and printout results ((e)-(f)) before (left) and after (right) instillation of artificial tears. Note the OCT color enhancement on the circular tomogram (d) and the overall increased RNFL thickness after adequate ocular lubrication (f). SS: signal strength.
