Effects of astaxanthin on accommodation, critical flicker fusion, and pattern visual evoked potential in visual display terminal workers

In the study “Effects of astaxanthin on accommodation, critical flicker fusion, and pattern visual evoked potential in visual display terminal workers,” authors Y. Nagaki, S. Hayasaka, T. Yamada, Y. Hayasaka, Mari Sanada, and Takatoshi Uonomi evaluated the effects of astaxanthin, a red carotenoid, on accommodation, critical flicker fusion (CFF), and pattern visual evoked potential (PVEP) in visual display terminal (VDT) workers. As controls, 13 non-VDT workers received no supplementation (Group A). Twenty-six VDT workers were randomized into 2 groups: Group B consisted of 13 subjects who received oral astaxanthin, 5 mg/day, for 4 weeks, and Group C consisted of 13 subjects who received an oral placebo, 5 mg/day, for 4 weeks. No significant difference in age was noted among the 3 groups. A double-masked study was designed in Groups B and C. Accommodation aqilitude in Group A was 3.72 1.5 diopters. Accommodation amplitudes (2.3 +- 1.4 and 2.2& 1 .O diopters) in Groups B and C before supplementation were significantiy (~~0.05) lower than in Group A. Accommodation amplitude (2.82 1.6 diopters) in Group B after astaxanthin treatment was significantly @ 2020-09-21T20:57:59-05:00