Phototherapy for the neonatal jaundice was accidentally discovered by the nurses of Rochford hospital in Essex, England who reported that the babies exposed to the sunlight had less jaundice.Later the pathologists observed that a vial of blood placed in the sunlight had a reduced amount of biliubin. In the present day light therapy is applied by overhead lamps emitting blue light of specific frequency for the same purpose. https://www.instagram.com/p/CKY5DLonp8W/?igshid=bkl6l8fnrtbr