Kutheni iindondo zelanga zikhusela amehlo?

Ubungozi bemitha ye-ultraviolet

Zintathu iindidi zemitha yeultraviolet ekukhanyeni kwelanga: UVA, UVB, kunye neUVC. I-UVC idla ngokufunxwa yiatmosfera yomhlaba, ngelixa i-UVA kunye ne-UVB zikhanyiswa ngokuthe ngqo emhlabeni. Ukubonakaliswa kwexesha elide kule mitha ye-ultraviolet kunokubangela umonakalo ohlukeneyo kwamehlo, kuquka:

1. Ifotokeratitis:

Oku kukudumba komphezulu weliso okubangelwa yi-UVB, kufana nokutshiswa lilanga eluswini.

2. Urhatyazo:

Ukutshatyalaliswa kwexesha elide kwimitha ye-ultraviolet kwandisa iziganeko ze-cataracts kwaye kubangela ukungaboni kakuhle.

3. Ukwehla kweemacular:

I-UVA kunye ne-UVB zikhawulezisa ukuwohloka kwendawo ye-macular kwaye zichaphazela kakhulu umbono ophakathi.

4. IPterygium:

Oku kukukhula kwi-cornea okubangelwa ikakhulu kukuvuselelwa kwe-ultraviolet kwaye kunokufuna unyango lotyando.

Indlela yokukhusela yezibuko zelanga

Iindondo zelanga ezikumgangatho ophezulu zinokuvala ngokufanelekileyo i-99% ukuya kwi-100% yemitha ye-UVA kunye ne-UVB, ngaloo ndlela inciphisa umonakalo othe ngqo wale mitha iyingozi emehlweni. Impembelelo yokukhusela yezibuko zelanga ibonakala ikakhulu kule miba ilandelayo:

1. Ukuthintela imitha ye-UV:

Iindondo zelanga ezikumgangatho ophezulu ziya kubonisa inqanaba labo lokukhusela i-UV400, nto leyo ethetha ukuba zinokuvala yonke imitha ye-ultraviolet ngamaza obude obungaphantsi kwe-nanometers ezingama-400.

2. Ukunciphisa ilitha:

Iilensi ze-polarized zinokunciphisa ukukhanya okuvela kwiindawo ezithe tyaba (njengamanzi, ikhephu, njl.), ukuphucula induduzo ebonakalayo kunye nokucaca.

3. Khusela ulusu olujikeleze amehlo:

Ulusu olujikeleze amehlo luncinci kwaye lonakaliswe lula yimitha ye-ultraviolet. Ukunxiba iindondo zelanga kunokubonelela ngokhuseleko olongezelelekileyo kuze kunciphise umngcipheko wokuba nemibimbi nomhlaza wolusu.

4. Thintela ukudinwa kwamehlo:

Ukukhanya okunamandla kunokubangela ukuba intende yeliso ibe ncinane, inyuse umthwalo kwizihlunu zamehlo, ize ibangele ukudinwa kwamehlo ixesha elide. Iiglasi zelanga zinokunciphisa ukukhanya kwaye zenze amehlo akhululeke ngakumbi.

Indlela yokukhetha izibuko zelanga ezifanelekileyo

Ukukhetha izibuko zelanga ezifanelekileyo akufanele kuqwalaselwe kuphela imfashini yabo, kodwa kwakhona ingqalelo kumsebenzi wabo wokukhusela. La macebiso alandelayo anokukunceda wenze ukhetho olufanelekileyo:

1. Jonga ileyibhile yokhuselo lweUV:

Qinisekisa ukuba iiglasi zelanga zineleyibhile yokhuselo ye-UV400 enokuthintela yonke imitha ye-ultraviolet eyingozi.

2. Khetha umbala ochanekileyo welensi:

Iilensi ezingwevu zinokunciphisa ukukhanya okupheleleyo ngaphandle kokutshintsha umbala, ngelixa iilensi ezimdaka kunye ne-amber zinokunyusa umahluko kunye nokuqonda okunzulu, okufanelekile kwimidlalo yangaphandle.

3. Qwalasela imathiriyeli yelensi:

Iilensi zePolycarbonate zikhaphukhaphu kwaye zichasene nempembelelo, zifanelekile kwimidlalo kunye nokusetyenziswa kwansuku zonke.

4. Qinisekisa ukugqunywa ngokupheleleyo kwelensi:

Iilensi ezinkulu kunye noyilo lwe-wraparound lunokubonelela ngokhuseleko olungcono kwaye luthintele imisebe ye-ultraviolet ukuba ingangeni ukusuka emacaleni.

Iiglasi zelanga azikho nje i-accessory yefashoni, kodwa kunye nemfuneko yokukhusela impilo yamehlo. Khetha iiglasi zelanga ezikumgangatho ophezulu ukunika amehlo akho olona khuselo lulungileyo ngelixa wonwabele ilanga.