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Yintoni ukukhanya okuluhlaza?

ILanga lisihlamba imihla ngemihla ekukhanyeni, enye yeentlobo ezininzi zemitha ye-electromagnetic, kunye namaza erediyo, ii-microwaves kunye nemitha ye-gamma.Asikwazi ukubona uninzi lwala maza amandla ahamba esithubeni, kodwa sinokuwalinganisa.Ukukhanya okubonwa ngamehlo abantu, njengoko kugqabhuka kwizinto, kunobude obuphakathi kwama-380 nama-700 eenanometers.Ngaphakathi kolu luhlu, ukusuka kwiviolet ukuya kubomvu, ukukhanya okuluhlaza okwesibhakabhaka kungcangcazela phantse obona bude buphantsi (400 ukuya kwi-450nm) kodwa phantse awona mandla aphezulu.

Ngaba ukukhanya okubhulowu kakhulu kuwonakalisa amehlo am?

Ngobona buhle bangaphandle bubonelela ngokugqithise kakhulu ukukhanya okuluhlaza okwesibhakabhaka, siyakwazi ngoku ukuba ukukhanya okuluhlaza bekuyingxaki.Oko kuthethiweyo, ukujonga kwinqanaba elisezantsi eliluhlaza okwesibhakabhaka, ngokungaqhwanyaziyo, kuninzi lweeyure zethu zokuvuka, yinto entsha, kwaye i-digital eyestrain sisikhalazo esiqhelekileyo.

Ukuza kuthi ga ngoku akukho bungqina bokuba ukukhanya okuluhlaza okwesibhakabhaka kwizixhobo kulityala.Abasebenzisi beekhompyuter bathanda ukuqhwanyaza kahlanu ngaphantsi kwesiqhelo, nto leyo enokubangela ukuba amehlo ome.Kwaye ukugxila kuyo nantoni na ixesha elide ngaphandle kwekhefu liyiresiphi yamehlo adiniweyo.

Ungonakalisa iretina ukuba ukhomba ukukhanya okuluhlaza okwesibhakabhaka ixesha elide ngokwaneleyo, yiyo loo nto singajongi ngqo kwiLanga okanye iitotshi ze-LED.

Yintoni idayi efunxa ukukhanya okuluhlaza?

Ubungozi bokukhanya okuluhlaza okwesibhakabhaka: Ukukhanya okuluhlaza kunokubangela i-cataracts kunye neemeko ze-retinal, ezifana nokuncipha kwe-macular.

Izinto zokufunxa ukukhanya okuluhlaza ezisetyenziswa kwilensi yeglasi okanye izihluzi zinokunciphisa ukukhanya okuluhlaza kwaye zikhusele amehlo ethu.