Ngokungafaniyo neeglasi zelanga eziqhelekileyo okanye iilensi ze-photochromic ezinciphisa ukukhanya, iilensi ze-UV400 zihluza yonke imisebe yokukhanya enamaza obude obufikelela kwiinanomitha ezingama-400. Oku kuquka i-UVA, i-UVB kunye nokukhanya okuluhlaza okwesibhakabhaka okubonakalayo ngamandla aphezulu (HEV).
Ukuze zithathwe njengeeglasi ze-UV, iilensi kufuneka zivale i-75% ukuya kwi-90% yokukhanya okubonakalayo kwaye kufuneka zinike ukhuseleko lwe-UVA kunye ne-UVB ukuvimba i-99% yemitha ye-ultraviolet.
Eyona nto ingcono kukuba ufuna iiglasi zelanga ezikhusela i-UV 400 kuba zikhusela phantse i-100% kwimitha ye-UV.
Qaphela ukuba ayizizo zonke iiglasi zelanga ezithathwa njengeeglasi zelanga ezikhusela i-UV. Iiglasi zelanga zinokuba neelensi ezimnyama, nto leyo enokuthiwa ithintela imitha yelanga, kodwa oko akuthethi ukuba izithunzi zibonelela ngokhuseleko olufanelekileyo lwe-UV.
Ukuba ezo zibuko zelanga ezineelensi ezimnyama azinazo izikhuselo ze-UV, ezo mibala zimnyama zimbi kakhulu emehlweni akho kunokunganxibi naziphi na izikhuselo ze-eye. Ngoba? Kuba umbala omnyama unokubangela ukuba amehlo akho avuleke, nto leyo ebangela ukuba amehlo akho abonakale ngakumbi ekukhanyeni kwe-UV.
Ndingayazi njani ukuba iiglasi zam zikhuselwe yi-UV?
Ngelishwa, akulula ukubona ukuba iiglasi zakho zelanga okanye iilensi ze-photochromic zineelensi zokukhusela i-UV ngokuzijonga nje.
Kananjalo awunakukwazi ukwahlula ubungakanani bokhuseleko ngokusekelwe kumbala welensi, njengoko imibala yelensi okanye ubumnyama bungenanto yakwenza nokhuseleko lwe-UV.
Eyona ndlela ilungileyo kukuthatha iiglasi zakho uziyise kwivenkile ye-optical okanye kwiziko lovavanyo lobuchwephesha. Bangenza uvavanyo olulula kwiiglasi zakho ukuze babone inqanaba lokhuseleko lwe-UV.
Okanye ukhetho olulula kukujonga umenzi odumileyo nochwephesha ofana ne-UNIVERSE OPTICAL, uze ukhethe iiglasi zelanga zokwenyani ze-UV400 okanye iilensi ze-UV400 photochromic kwiphepha.https://www.universeoptical.com/1-56-aspherical-uv400-q-active-material-photochromic-lens-product/.