TNF and dry eye syndrome: In the dry eye group1 day postoperative concentration of IL-1β, IL-6, IL-8, MCP-1, TNF-α and IFN-γ were 95.54 ± 14.82, 500.30 ± 38.69, 1561.69 ± 289.41, 4595.11 ± 359.16, 621.67 ± 43.55, and 266.79 ± 23.54 pg/ml, respectively.