Phototherapy or sunlight therapy mean exposure of person to daylight or to specific wavelengths of light. This sunlight is a free source of curative form of method in many disorders now a day. Common use of this is done with the treatment of acne vulgaris, eczema and neonatal jaundice also used in acceleration of wound healing, improvement in blood properties and blood circulation and sinusrelated diseases and disorders. In neonatology, its use is very common in the treatment of neonatal hyperbilirubinemia through the isomerization of the bilirubin and consequently transformation into compounds that the newborn can excrete via urine and stools. There are so many inventions going on regarding sunlight use in medical and surgical field.

Keywords: Pioneer; Phototherapy; Niles Ryberg Finsen; Sister Jean E Ward; Neonatal jaundice.