Figure 3. The expression levels tumor necrosis factor-α in the aqueous humor and serum at different time points (expressed as the mean μg/l±SD). The concentration of tumor necrosis factor-α in the aqueous humor reached a peak at 4 h. In the serum, tumor necrosis factor-α reached a peak concentration 16 h after injection. After 48 h, tumor necrosis factor-α concentrations in both the aqueous humor and the serum returned to their original levels.