薬理と治療

Abstract

In a recent Japanese daily life style, eyes have to work hard, such as seeing a LCD screen, driving a car, etc. These life styles are considered as one of factors, which lead to vision deterioration. In this study, we let a young generation take beta-carotene derived from microalgae Dunaliella bardawil （hereinafter “Dunaliella beta-carotene”）, which can give the effect on retinal visual function, and investigated the effect on the visual function in a double-blind placebo comparison study. Dunaliella beta-carotene is reported that it can improve visual function, especially expanding of a visual field, and can improve vision on retinitis pigmentosa patients. Therefore, in this study, we conducted the placebo control double︱blind study about the effect on suppress of low vision and on improvement of various symptoms of eyes in the daily life. As a result, it showed improvement tendency about bleariness, good vision in the evening and night, dry eye, headache frequency, facilitating to watch a hand and facilitating to watch a sign and a billboard at night. In addition, we recognized significant improvement on visual recovery, comparing between placebo group and treatment group by Dunaliella beta-carotene intake（. P＜0.01）Therefore, we would like to report the result（. UMIN-CTR000030606）