Si ka duwan muraayadaha caadiga ah ama muraayadaha sawir-qaadista ee yareeya dhalaalka, muraayadaha UV400 waxay sifeeyaan dhammaan fallaadhaha iftiinka leh hirarka dhererka ilaa 400 nanometer. Tan waxaa ku jira UVA, UVB iyo iftiinka buluuga ah ee muuqda (HEV).
Si loo tixgeliyo muraayadaha UV, muraayadaha ayaa looga baahan yahay inay xannibaan 75% ilaa 90% iftiinka muuqda waana inay bixiyaan ilaalinta UVA iyo UVB si ay u xannibaan 99% shucaaca ultraviolet.
Fikrad ahaan, waxaad rabtaa muraayadaha qorraxda ee bixiya ilaalinta UV 400 maadaama ay bixiyaan ku dhawaad 100% ilaalinta fallaadhaha UV.
Ogsoonow in aan dhammaan muraayadaha qorraxda loo tixgelin muraayadaha ilaalinta UV. Labada muraayadood ayaa laga yaabaa inay leeyihiin muraayado madow, kuwaas oo loo maleynayo inay xannibaan fallaadhaha, laakiin taasi macnaheedu maaha in hadhyadu bixiyaan ilaalin ku filan UV.
Haddii muraayadaha muraayadaha madow ee leh muraayadaha mugdiga ah aysan ku jirin ilaalinta UV, kuwa mugdiga ah ayaa dhab ahaantii ka sii daran indhahaaga intii aanad xiran wax muraayad ah oo ilaaliya gebi ahaanba. Waa maxay sababtu? Sababtoo ah madawga madow wuxuu u keeni karaa ardaydaada inay kala baxaan, oo indhahaaga u soo bandhigto iftiin UV oo badan.
Sideen ku ogaan karaa in muraayadahaygu leeyihiin ilaalinta UV?
Nasiib darro, ma fududa in la sheego haddii muraayadaha muraayadaha indhahaaga ama muraayadaha sawir-qaadista ay leeyihiin muraayadaha ilaalinta UV-ga oo kaliya adigoo eegaya iyaga.
Sidoo kale ma kala saari kartid qadarka ilaalinta ee ku salaysan midabka muraayadda, maadaama muraayadaha muraayadaha ama mugdiga aysan wax shaqo ah ku lahayn ilaalinta UV.
Sharadkaaga ugu fiican waa inaad muraayadahaaga u qaadato dukaanka indhaha ama xarumaha imtixaanada xirfadlayaasha ah. Waxay ku samayn karaan tijaabo fudud muraayadahaaga si ay u go'aamiyaan heerka ilaalinta UV.
Ama doorashada fudud waa adiga oo udub dhexaad u ah raadintaada shirkad sumcad leh, iyo soo-saare xirfad leh sida UNIVERSE OPTICAL, oo aad bogga ka doorato muraayadaha UV400 ee dhabta ah ama muraayadaha sawir-qaade ee UV400https://www.universeoptical.com/1-56-aspherical-uv400-q-active-material-photochromic-lens-product/.