Ukukhanya ukuphela komthombo wokukhanya otholakala endlini ebusuku. Ekusetshenzisweni kwansuku zonke kwasendlini, umthelela wemithombo yokukhanya ye-stroboscopic kubantu, ikakhulukazi asebekhulile, izingane, njll. Kungakhathaliseki ukuthi ufunda esifundweni, ufunda, noma uphumule ekamelweni, imithombo yokukhanya engalungile ayigcini nje ukunciphisa ukusebenza kahle, kodwa ukusetshenziswa kwesikhathi eside kungase kushiye ingozi efihliwe empilweni.

U-Lightman wethula abathengi ngendlela elula yokuqinisekisa ikhwalithi yeIzibani ze-LED，Sebenzisa ikhamera yefoni ukuze uqondanise umthombo wokukhanya. Uma isitholi sokubuka sinemizila eguquguqukayo, isibani sinenkinga "ye-strobe". Kuyaqondwa ukuthi lesi sigameko se-stroboscopic, okunzima ukusihlukanisa ngeso lenyama, sithinta ngqo impilo yomzimba womuntu. Lapho amehlo evezwa endaweni ye-stroboscopic ebangelwa izibani eziphansi isikhathi eside, kulula ukubangela ubuhlungu bekhanda nokukhathala kwamehlo.

Umthombo wokukhanya we-stroboscopic empeleni ubhekisela ekuvamiseni nasekuhlukeni kwezikhathi ezithile kokukhanya okukhishwa umthombo wokukhanya ngokukhanya okuhlukile nombala ngokuhamba kwesikhathi. Umgomo wokuhlola ukuthi isikhathi sokuvala sefoni ephathekayo sishesha ukwedlula ukuphazima okuguquguqukayo okungama-24/isekhondi okungabonwa ngeso lomuntu, ukuze into ye-stroboscopic engabonakali ngeso lenyama iqoqwe.

I-Strobe inemiphumela ehlukene empilweni. I-American Epilepsy Work Foundation iveze ukuthi izici ezithinta ukwethulwa kwesithuthwane se-photosensitivity ikakhulukazi zifaka imvamisa ye-scintillation, amandla okukhanya, kanye nokujula kokuguquguquka. Ocwaningweni lwethiyori ye-epithelial ye-photosensitive isithuthwane, uFisher et al. waveza ukuthi iziguli ezinesifo sokuwa zinamathuba angu-2% kuya ku-14% okuqalisa ukuquleka ngaphansi kokukhuthazwa kwemithombo yokukhanya ye-scintillation. I-American Headache Society ithi abantu abaningi abanekhanda elibuhlungu bazwela kakhulu ekukhanyeni, ikakhulukazi i-glare, imithombo yokukhanya ekhanyayo ene-flicker ingabangela i-migraine, futhi i-low frequency flicker inzima kakhulu kune-high frequency flicker. Ngenkathi becwaninga umphumela wokucwayiza ekukhathaleni kwabantu, ochwepheshe bathola ukuthi ukucwayiza okungabonakali kungaphazamisa umzila wenhlamvu yeso, kuthinte ukufunda futhi kuholele ekwehleni kwamehlo.