phototherapy
  光線療法
  pho·to·ther·a·py /-ˈθɛrəpɪ/ 名詞
  光線療法,光療
  Pho·to·ther·a·py n. Med. The application of light for therapeutic purposes, esp. for treating diseases of the skin. -- Pho*to*the*rap*ic Pho*to*ther*a*peu*tic a.
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  phototherapy
       n : the use of strong light to treat acne or hyperbilirubinemia
           of the newborn