IL6 and Leber congenital amaurosis: The levels of IL-2(P* = 0.367) were similar in LCA patients and healthy individuals, while the expression levels of IL-4 (P*=0.037), IL-6 (P* < 0.001), IL-10 (P* = 0.020), IL-17 (P* = 0.010), IFN-γ (P* = 0.018), and TNF-α (P* = 0.030) were increased.