1. 
   light therapy
   phototherapy (def. 1). photodynamic therapy.
   Found op http://www.encyclo.co.uk/local/21001
   
   
2. 
   Light therapy
   Light therapy or phototherapy (classically referred to as heliotherapy) consists of exposure to daylight or to specific wavelengths of light using lasers, light-emitting diodes, fluorescent lamps, dichroic lamps or very bright, full-spectrum light, usually controlled with various devices. The light...
   Found op http://en.wikipedia.org/wiki/Light_therapy
   
   
3. 
   Light Therapy
   Fluorescent lights that are placed over a newborn's bed to help breakdown bilirubin and treat jaundice, a yellowish skin color due to excessive amounts of bilirubin in the blood. This treatment is used for a few days until the liver is mature enough to breakdown the bilirubin without assistance. Syn...
   Found op http://www.pregnology.com/AZ/L/3
   
   
4. 
   light therapy
   The treatment of disease with certain types of light. Light therapy can use lasers, LED, fluorescent lamps, and ultraviolet or infrared radiation. Also called phototherapy.
   Found op http://www.cancer.gov/dictionary?expand=L
   
   
5. 
   light-emitting diode therapy
   Treatment with drugs that become active and may kill cancer cells when exposed to light. Light-emitting diode therapy is type of photodynamic therapy which uses a special type of light to activate the drug. Also called LED therapy.
   Found op http://www.cancer.gov/dictionary?expand=L
   
   

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