IL4 and keratoconus: We detected 14.2±8.6 pg/ml (mean ± SD) of IL-4 in the control and 7.6±5 pg/ml in the KC pool (Figure 2); the IL-4 decrease in KC was statistically significant (p = 0.04), confirming the multiplex immuno-bead assay results (Figure 1, Tables 2 and 3).