Do you find that your eyes are sensitive to bright lights?
A study published in the journal Optometry & Vision Science describes how the carotenoids lutein and zeaxanthin were found to positively effect many visual performance issues (including contrast sensitivity) when one is exposed to glaring light conditions. Carotenoids are organic pigments that are naturally occurring in plants and some other photosynthetic organisms like algae, some types of fungus and some bacteria. They are potent antioxidants and play a protective role in preventing many eye conditions.
This study indicated that these compounds, found most commonly in leafy greens, help people deal with bright sunlight outdoors, light from computer monitors, bright car headlights, etc.