The geometric mean of the IL-6 concentration in the HCs with DE was 8.86 times higher (95% CI 2.49–31.50) than that of the HCs without DE (p < 0.001) and 4.60 times higher (95% CI 2.11–10.02) than the pterygium groups without DE (p = 0.001). The gene discussed is IL6; the disease is pterygium.