Abantu abaninzi abanako ukuyiqonda, kodwa indlela ephela ekhuselekileyo yokujonga ukuphela kwelanga kusetyenziswa izihlungi ezikhethekileyo zelanga. Amehlo akho nombono ngenye yezinto zakho ezixabisekileyo. Kungenakubonakala ngathi, kodwa ukulimaza amehlo akho ngokujonga nje ukuphela kwelanga kusenzeka kakhulu. Ukugqoka "iziglasi zokugqithisa" ezikhethekileyo kukucetyiswa kakhulu ukuba ubukele ukuphela kwelanga.
Umbutho we-American Optometric (AOA) ucebisa ukusebenzisa umbonisi welanga ogcinwe ngesandla, izihlomelo zelanga ezikhethekileyo, okanye ezinye izihlungi eziqinisekisiweyo ze-ISO ukuba uceba ukujonga ukuphela kwelanga kwithuba elincinane.
Ingozi Emehlweni Akho
Kungabonakala kungenakubungozi, kodwa ukujonga ukukhanya kwelanga ngamehlo athile kungabangela ukulimala kwamehlo kunye nokuba nomonakalo ongunaphakade emehlweni akho. Isixa esiningi ngokwemitha ye-ultraviolet singenza i- photokeratitis , efana nokutshisa ilanga emehlweni. Ukujonga ngokuthe ngqo ilanga ngexesha lokuphela kwelanga kungakhokelela ekutheni i-retinopathy yelanga.
Ngosuku oluqhelekileyo lwelanga, ukujonga ngokuthe ngqo ilanga kukubangela intlungu , kukunyanzelisa ukuba ukhange ngaphambi kokuba umonakalo owenziwe emehlweni akho. Nangona kunjalo, ngexesha lokuphela kwelanga, ilanga libonakala likhanya kancinane, likuvumela ukuba ukhangele ixesha elide. Awuyi kukuqonda, kodwa njengoko ukhangeleka ekukhawuleni kwelanga, imisebe ye-ultraviolet iyatshisa iiseli kwi- retina yakho. Xa i-retina ishushu, akukho ndlela yokulungisa umonakalo nombono uya kulahleka.
Iimitha zomelele ngokwaneleyo zokubangela ukuba ungaboni kakuhle.
Kutheni Ufuna Iiglasi Ezizodwa
Ukuba ufuna ukujonga ukuphela kwelanga, kufuneka ugqoke iilazi ezizodwa zokugubha. Izihlungi zokubukela zithengiswa ngendlela yokugqoka "iziglasi zokugungqa" okanye "ukucima umthunzi" okanye amakhadi okubukela ilanga onokubamba ngesandla sakho.
Ezi zixhobo ezilula zinciphisa ilanga kumazinga akhuselekileyo ukuphepha ukulimaza amehlo akho. I-AOA ikhuthaza ukulawulwa kweengilazi zokukhanya kwelanga ezihambelana nemigangatho yase-American Astronomical (AAS). Uludwe lwabavelisi abaqinisekisiweyo lunokufumaneka kwiwebhusayithi ye-AAS. Ngaphambi kokuphelelwa kwelanga enkulu, i-marketplace igxobhozwa ngamaglasi e-eclipse angabonakaliyo abhalwe njenge-ISO-eyanelisayo xa kunjalo. Iziko zelanga eziqhelekileyo azikhuselekile ukujonga ukuphela kwelanga.
Yintoni Yokujonga
Usenokuba ufumene iibhanki ezisezantsi ezisebusweni zelanga. Ngelishwa, ukubona nje i-ISO logo kwidivaysi yokujonga ayithethi ukuba imveliso iphephile ngokupheleleyo. Ifowuni kufuneka ivela kumenzi oncomekayo okanye umthengisi ogunyazisiweyo. Hlola iwebhusayithi ye-AAS uluhlu lwabathengisi abakhuselekileyo.
Kwakhona, khangela iskrini ukuze ukhuseleko. Jonga ngeglasi uze uqinisekise ukuba awukwazi ukubona izibane eziqhelekileyo. Umele ukwazi ukubona ukukhanya okugqamile kakhulu, njengelanga okanye i-flashlight LED ekhanyayo. Ezi zibane zimele zibonakala zidibene ngokucwangcisa idivayisi yakho. Ukuba ilanga eliqhelekileyo libonakala lingaxakeki kakuhle, isixhobo mhlawumbi asikho nto kwaye asihambisani nemigangatho ye-ISO.
Ukongeza, qinisekisa ukuba isixhobo sakho sikhululekile.
Iingcebiso zokujonga i-Eclipse ye-Solar
Ukuba uceba ukujonga ukuphela kwelanga, yenza izibuko zakho ezikhethiweyo ze-ISO ezilungeleyo kwaye zilandele ezi ngcebiso zikhuseleko ezibalulekileyo:
- Ukuba unxibe iiglasi, zibeka iziglasi zakho zokugubha phezu kwazo. Ukuba abayifanelekanga, bamba umbukeli ophethe ngesandla phambi kweziglasi zakho.
- Ukulawula abantwana abancinci basebenzisa izihlungi zelanga.
- Gubungela amehlo akho kunye neziglasi zakho zokugqiba phambi kokujonga phezulu elangeni. Kwakhona, musa ukususa iiglasi zakho ngelixa ukhangele ilanga. Khangela okokuqala, uze ususe.
- Musa ukujonga ngokuqhubekayo elangeni, kwaneglasi ekhethekileyo. Thatha ikhefu rhoqo ngokujonga kude.
- Jabulela ukungabikho kwexesha lokukhanya kwelanga ngokukhuselekileyo ngokulandela iinkqubo zokhuseleko.
ILizwi
Ukuba ukhangele ngqo ilanga ngexesha lokuphela kwelanga kwaye ucinge ukuba unokulimaza amehlo akho, kukulungele ukubona i-optometrist ngokukhawuleza. Kubaluleke kakhulu ukuqinisekisa ukuba akukho monakalo omkhulu okanye ongunaphakade, nangona ungenayo impawu okanye iimpawu zomonakalo. Kuhlala kukulungele ukukhuseleka kunokuba uxolo xa kuziwa kumbono wakho.
> Imithombo:
> Behar-Cohen F, Baillet G, Ayguavives, T, et al. Ukulimala kwe-Ultraviolet kwiso eliphinda liphinde libuye. Clinical Ophthalmol. 2014; 8: 87-104.
> I-NASA ikhuthaza iingcebiso zokukhusela ukujonga i-Solar Eclipse ye-Agasti, iNASA. Agasti 2017.