Figure 5. Uptake kinetics of L-Arginine and NAC in rabbit lens. Two rabbits in each group were topically applied with 0.5% inhibitor on right eye and 2% inhibitor on the left eye. The inhibitors were quantified by LC-MS in total lens extract. A: 0.5% L-arginine eye drop; B: 2% L-arginine eye drop; C: 0.5% NAC eye drop; D: 2% NAC eye drop.