IFNG and keratoconus: KC and IFN-γ levels were higher in ob/ob mice (KC 40.4 (16.5–229.1) pg/mL vs. 100.1 (17.6–268.9) pg/mL, p<0.05; IFN-γ 7.3 (2.0–53.9) pg/mL vs. 45.9 (1.2–125.0) pg/mL, p<0.05) than in their wild-type littermate controls.