SCD and Schnyder corneal dystrophy: Through Spearman correlation analysis, the correlation between SCD and immune cell infiltration showed that SCD was significantly positively correlated with the degree of infiltration of B.cells.native, Mast.cells.testing and Macrophages.M0, and SCD was significantly negatively correlated with the degree of infiltration of Macrophages.M2 and Eosinophels, while SCD was positively correlated with the degree of infiltration of Macrophages.M1, but the correlation was not significant (P<0.05) (Fig 7A).