Figure 2.

(A) Relative abundance of bacterial taxa detected in contact lens residual liquid in the storage case used by a patient with acute conjunctivitis. The number of reads obtained in 16S rDNA clone library analysis (total 27 reads), which showed the best match to the respective bacterial genera is indicated. (B–D) Chromatograms of histamine in the mobile phase without sample (B), 8 mg/mL histamine standard solution (C), and contact lens care solution used by the current patient 492 ng/mL (D). The peak histamine level in the contaminated lens care solution is displayed as peak 1 in (D). Peak identification: 1 denotes histamine dihydrochloride, 2 denotes 1,7-diaminoheptane.