The Improvement Effect of Bilberry Extract（BILBERON®）—Containing Diet on Eye Fatigueand Eye Dryness―A Randomized, Double－blind, Placebo－controlledParallel－group Comparison Study―
Asami Nakata and et al., 薬理と治療, 44, 1773-1783 (2016), DOI:http://dx.doi.org/