CCL4 and keratitis: On the other hand, elevated levels of MIP-1β (OR: 1.1117, 95% CI: 1.0395-1.1889, PIVW: 0.0020) and TARC (OR: 1.0980, 95% CI: 1.0091-1.1947, PIVW: 0.0299) were associated with an increased risk of keratitis.