Fig. 2From: Ultrathin Descemet stripping automated endothelial keratoplasty versus Descemet membrane endothelial keratoplasty: a fellow-eye comparisonContrast sensitivity (logCS) under mesopic conditions measured with the Optec 6500 Vision Tester at different spatial frequencies (cycles per degree) 12 months after surgery. The gray area represents the normal range of similar age subjects [18]Back to article page