Figure 7 of Qu, Mol Vis 2011; 17:3147-3155.

Figure 7. Comparisons of corneal epithelial toxicity of anti-inflammatory eye drops and their active components. HCECs were treated with either 0.010% eye drops or 0.010% active components for 24 h (n=4). The corneal epithelial toxicity was measured by MTT assay (A) and LDH assay (B). Significant differences were between the eye drops and the corresponding active components.