the use of light to treat medical conditions, especially skin problems or mental health problems

Light therapy involves sitting under bright, artificial light emitted from a box or lamp for about 30 minutes a day. 光照疗法需要每天坐在一盏灯或一个灯箱下，接受30分钟明亮的人工光线照射。

His psoriasis went into remission for two years after his initial treatment with light therapy. 在接受最初的光照疗法后，他的牛皮癣消退了两年。

Winter depression can be treated with antidepressants or light therapy. 冬季抑郁症可以用抗抑郁药或光照疗法来进行治疗。