Pigments known as carotenoids are bountiful in green leafy vegetables and colored fruits, with specific carotenoids known as lutein and zeaxanthin found in kale and spinach and lycopene abundantly present in tomatoes.  .Explaining that scientists since the late 1700s have postulated that consumption of certain food pigments may correlate to improvements in human vision, James M. Stringham and colleagues studied whether dietary consumption of lutein and zeaxanthin may impact visual performance.  The team found evidence for the role of these two carotenoids in reducing glare effects, specifically via the involvement of macular protein in absorption of short-wave scattered light.