Maqui, tiny black berries that grow wild in the rain forests of Chile and Argentina, are beloved by small birds. Now they are showing promise for computer-weary humans with dry eyes. In a recent study, Japanese researchers tested a standardized maqui berry extract on 74 people that suffered from dry eyes and eye fatigue that used computers, smartphones or video games for more than four hours a day. Half took 60 milligrams of the maqui berry extract and half took a placebo for four weeks. The maqui berry group showed significantly greater production of lacrimal fluid in both eyes compared to the placebo group, and also reported less eye fatigue and more relaxed shoulders.