Babban Index (1.74 index) ruwan tabarau abu ne mafi sirara da haske ruwan tabarau abu a cikin duniya, kuma shi ne mafi kyau zabi ga high-ikon prescriptions, ko duk wanda ke son sirara da ruwan tabarau don aikace-aikace. Suna da kariya ta 100% UV kuma suna aiki da kyau tare da mafi yawan tsarin firam ban da baƙar fata.
Don mafi kyawun hangen nesa da bayyanar, yana da kyau a sami murfin ruwan tabarau na anti-reflective (AR coating) a yi amfani da ruwan tabarau masu girma. Manyan ruwan tabarau masu rufaffiyar AR suna watsa har zuwa kashi 99.5 na haske zuwa ido don ingantacciyar hangen nesa.
Kuma saboda rufin AR kusan yana kawar da tunanin ruwan tabarau, yana sa manyan ruwan tabarau su bayyana kusan ganuwa, don haka wasu suna ganin idanunku, ba ruwan tabarau na ku ba.
Hasken shuɗi yana jeri a cikin tsayin raƙuman ruwa da ƙarfi daga 380 nm (mafi girman ƙarfi zuwa 500 nm (mafi ƙarancin ƙarfi).
Don haka, kusan kashi ɗaya bisa uku na dukkan hasken da ake iya gani shine shuɗi
An ƙara rarraba hasken shuɗi zuwa cikin waɗannan ƙungiyoyin ƙasa (ƙarashin makamashi zuwa ƙarancin ƙarfi):
Hasken Violet (kimanin 380-410 nm)
Hasken shuɗi-violet (kimanin 410-455 nm)
Haske mai launin shuɗi-turquoise (kimanin 455-500 nm)
Saboda ƙarfin ƙarfinsu, violet da blue-violet haskoki sun fi cutar da ido. Saboda wannan dalili, waɗannan haskoki (380-455 nm) kuma ana kiran su "hasken shuɗi mai lahani."
Hasken haske mai launin shuɗi-turquoise, a gefe guda, suna da ƙarancin kuzari kuma suna bayyana don taimakawa kula da yanayin bacci mai kyau. Saboda wannan dalili, waɗannan haskoki (455-500 nm) wani lokaci ana kiran su "hasken shuɗi mai fa'ida."
Hasken ultraviolet (UV) da ba a iya gani yana kwance kusa da ƙarshen mafi girman makamashi (violet) na ƙarshen hasken bakan haske na UV yana da gajeriyar raƙuman ruwa da ƙarin kuzari fiye da hasken shuɗi mai ƙarfi da ake iya gani. UV radiation an tabbatar da cewa yana lalata idanu da fata.
Ana ƙirƙira ruwan tabarau na rage haske shuɗi ta amfani da alamar haƙƙin mallaka wanda aka ƙara kai tsaye zuwa ruwan tabarau kafin aikin simintin. Wannan yana nufin kayan rage haske mai shuɗi wani ɓangare ne na duka kayan ruwan tabarau, ba kawai tint ko sutura ba. Wannan tsarin haƙƙin mallaka yana ba da damar shuɗi haske rage ruwan tabarau don tace mafi girman adadin duka hasken shuɗi da hasken UV.
1. Hasken shuɗi yana ko'ina.
2. Hasken haske na HEV yana sa sararin sama yayi shuɗi.
3. Ido ba shi da kyau sosai wajen toshe hasken shuɗi.
4. Hasken shuɗi na iya ƙara haɗarin macular degeneration.
5. Blue haske yana ba da gudummawa ga nau'in ido na dijital.
6. Kariyar hasken shuɗi na iya zama mafi mahimmanci bayan tiyatar cataract.
7. Ba duk hasken shuɗi ba ne mara kyau.