Figure 1. Effects of lutein or zeaxanthin supplementation on cell viability of lens epithelial cells. Subconfluent human lens epithelial cells were incubated with 0, 0.1, 0.5, 1, 5, and 10 µM lutein or zeaxanthin for 48 h and then cell viability was determined. A: Effects of lutein supplementation of cell viability. B: Effects of zeaxanthin supplementation on cell viability.