Figure 4 of Kojima, Mol Vis 2014; 20:929-938.

Figure 4. Changes of fluorescein staining scores with 3% topical diquafosol application in the Sod1-/- mice and wild type (WT) mice. Note the significant improvement in the fluorescein staining score in the Sod1-/- mice with 2 weeks of diquafosol sodium treatment. * represents p < 0.01.