Figure 1 of He, Mol Vis 2011; 17:2605-2611.

Figure 1. Corneal fluorescein staining photographs. Slit-lamp microscopic and fluorescein staining photographs from a representative patient with dry eye related to GVHD (A) and a control (B). Green punctate positive fluorescein staining in A highlights the erosion of the corneal epithelium; B shows an intact corneal epithelium in a control.