I -Blight ye-BILI iyithuluzi lokwelapha elikhanyayo ukwelapha i-jaundice esanda kuzalwa (i-hyperbilirubinemia). Izinga eliphakeme le-bilirubin lingadala ukulimala kobuchopho (i-kernictes), okuholele ku-cerebral palsy, ne-neuropathy, ukugqolozela nokukhubazeka kanye ne-dental enamel hypoplasia. Izokwelapha zisebenzisa ukukhanya okuluhlaza okwesibhakabhaka (420-470 NM) eziguqula i-bilirubin ibe yifomu elingafakwa kwi-umchamo kanye nendle. Ama-goggles athambile afakwa enganeni ukunciphisa ukulimala kwamehlo kusuka ekukhanyiseni okuphezulu.