Figure 2.

¹H-NMR spectra. (A) Typical spectrum of cholesteryl stearate; (B) spectrum of meibum expressed and pooled from four lids of an eight-year-old child without ocular disease; and (C, D) average spectra of meibum for participants in this study whose spectra (C) contained or (D) did not contain measurable cholesteryl ester in the initial analysis. The y-axis unit is resonance intensity, and the spectra were scaled and shifted along the y axis individually.