Lutein, blackcurrant extract (2009) may reduce visual fatigue
Visual fatigue such as computer eye strain caused by staring at the computer for long hours, may be eased a daily supplement containing blackcurrant fruit extract (200 mg), lutein (5 mg), and zeaxanthin (1 mg), according to a randomized, double-blind, placebo-controlled cross-over trial.
The subjects were randomly assigned to receive either the lutein supplement, or placebo, for two weeks, followed by two weeks of washout, and a further two weeks with the opposite intervention.
After completing a two hour visual proof reading task, the researchers measured signs of visual fatigue, including so-called eye fixation related potentials (EFRP).
Published: Applied Ergonomics, Volume 40, Issue 6, Pages 1047-1054, The effect of lutein supplementation on visual fatigue: A psychophysiological analysis.
Authors: A. Yagi, K. Fujimoto, K. Michihiro, B. Goh, D. Tsi, H. Nagai