Phototherapy Overhead light. blanket and both of them Blue light: wavelength 450nm, visible Photodegradation: UB is converted into a water soluble pigment, harmless. excreted in urine Side effects Uncomfortable eyes, retinal damage in animal dehydration, rash, diarrhoea, abnormal temperature Phototherapy should not be used indiscriminately.Phototherapy Overhead light, blanket, and both of them Blue light: wavelength 450nm, visible Side effects: Uncomfortable eyes, retinal damage in animal, dehydration, rash, diarrhoea, abnormal temperature Phototherapy should not be used indiscriminately. Photodegradation: UB is converted into a water￾soluble pigment, harmless, excreted in urine