Ukubaluleka kokuvikelwa kwe-UV
Abantu abaningi besaba imiphumela engozini yemisebe ye-ultraviolet (UV) esikhumbeni , kodwa bambalwa abaqaphela ukuthi ingozi eyayibekwe emehlweni abo. Kungakhathaliseki ukuthi ilanga lemvelo noma imisebe ye-UV yokufakelwa, imisebe ye-UV ingalimaza izicubu zomzimba zeso kanye ne- cornea ne-lens. Kungashisa futhi phambili kweso, kufana nokushisa ilanga esikhumbeni. Njengoba nje sivikela isikhumba sethu nge-sunscreen, kufanele sikhumbule ukuvikela amehlo ethu nombono ngezibuko ezifanele.
UV Rays kanye Amehlo Akho
Imibala ye-Ultraviolet (UV) iyimisebe engabonakali eyingxenye yamandla avela elangeni. Kunezinhlobo ezintathu zemisebe ye-UV: UV-A, UV-B, ne-UV-C. Ngenkathi ama-UVC emisebe engekho usongo ngoba afakwe ungqimba lwe-ozone, ukuvezwa kwemisebe ye-UVA ne-UVB kungaba nemiphumela emibi emehlweni akho nangombono. Ukwehliswa isikhathi eside kulezi zingozi kungabangela umonakalo omkhulu. Inkomba ye-UV iyalinganisa ukuqina kwemisebe ye-UV. Le nombolo ilinganisa ukuthi kungathatha isikhathi esingakanani ngaphambi kokulimala kwelanga. Inkomba ka-1-3 ibonisa ukuthi kungenzeka ukuthi umonakalo we-UV ungaphansi, kanti inkomba ka-8-10 isho ukuthi kungenzeka. Kubalulekile ukuphawula ukuthi imisebe ye-UV inganikezwa ngemithombo yokufakelwa efana nemishini yokudonsa, imibhede yokuqothula, kanye nemivimbo ye-lasers.
Imiphumela Yesikhathi Esifishane: Uma uvezwe futhi ungavikeleki emanzini amaningi e-UV esikhathini esifushane, amehlo akho cishe azobhekana nomphumela okuthiwa i-photokeratitis.
I-photokeratitis ukuvuvukala kwe-cornea okubangelwa ukuvezwa okuncane emisebeni ye-UV, ngokuvamile lapho ihlanganiswa nemimoya ebandayo neqhwa. Kunjengokuthi "ukushisa ilanga kweso," kungase kube buhlungu futhi kungabangela izimpawu kubandakanya amehlo abomvu, ukuzwa komzimba wangaphandle noma umuzwa wokuzizwa emehlweni, ukuzwela ngokweqile ukukhanya, nokudwengula ngokweqile.
Ngenhlanhla, lokhu kuvame ukuba okwesikhashana futhi kungabonakali kubangela ukulimala okungapheli emehlweni.
Imiphumela Yesikhathi Eside : Ukuvezwa isikhathi eside emisebeni ye-UV kungaba yingozi nakakhulu. Ucwaningo lwesayensi nokucwaninga okuvela ohlelweni lwesikhala sase-US lubonise ukuthi ukuvezwa kwemisebe encane yemisebe ye-UV esikhathini esiyiminyaka eminingi kungandisa amathuba okuthuthukisa i-cataract futhi kungabangela umonakalo ku-retina, elangeni lensimbi elicebile esetshenziselwa ukubona. Lo monakalo ku-retina ngokuvamile awubuyiselwa. Ukulimala okuphindaphindiwe kokutholakala okuphindaphindiwe kungabangela ukugula okungapheli futhi kwandise ingozi yokuthuthukisa umdlavuza wesikhumba ezungeze amajwabu amehlo. Ukwehliswa isikhathi eside kukhanya kwe-UV kuyisici esiyingozi ekuthuthukiseni i-pterygium, ukukhula okungena ekhoneni lamehlo, kanye ne-pinguecula, i-lesion ephuzi, ekhuphuka kancane eyenza izicubu zomzimba zeso lakho elimhlophe .
Indlela Yokuvikela Umbono Wakho
Akukaziwa ukuthi kungakanani ukutholakala kwemisebe ye-UV eyenza ngempela ukulimaza amehlo akho nombono. Ama-ophthalmologists ancoma ukugqoka izibuko eziphezulu zekhwalithi ezinikezela isivikelo esihle nesikhwama esiphezulu lapho sisebenza ngaphandle, sithatha ezemidlalo yangaphandle, sithatha ukuhamba, sisebenza, sithumba noma senza noma yini elangeni.
Ukuze unikeze ukuvikeleka okwanele emehlweni akho, izibuko zakho zelanga kufanele:
- Vimba amaphesenti angu-99 kuya kwangu-100 womabili ama-UV-A ne-UV-B
- Isikrini siphumele amaphesenti angu-75 kuya kwangu-90 wokukhanya okubonakalayo
- Hlanganiswa kahle nombala futhi ukhululekile ukuphazamiseka nokungapheleli
- Yiba nama-lens ayimpunga ukuhlonishwa kombala okufanelekile
Uma uchitha isikhathi esiningi ekukhanyeni kwelanga, ukugoqa okuzungezile kungahlinzeka ukuvikelwa okungeziwe emisebeni ye-UV eyingozi. Ngisho noma ugqoke ama-lens oxhumana nawo anesivikelo se-UV, usadinga ukugqoka izibuko. Imisebe ye-UV ingathinta izicubu zamehlo ezingahlanganiswa oxhumana nabo.
Amehlo akho azobe ekhululekile nakakhulu, futhi ukukhanya okukhulu kuvinjiwe.
Izwi elivela
Khumbula ukuhlinzeka ngokuvikelwa kwe-UV efanele kubantwana bakho kanye nentsha. Izingane ngokuvamile zichitha isikhathi esiningi elangeni kunabantu abadala. Izingane zisengozini yokuthuthukisa umonakalo omkhulu wombono kamuva empilweni ngaphandle kokuvikelwa kwamehlo njalo UV. Amehlo amancane athambekele kakhulu ekulimazeni okuhlobene ne-UV. Ngokungafani neliso elidala, ilanga lomntwana alikwazi ukuhlunga ngokuphumelelayo imisebe ye-UV, ngakho-ke imisebe eminingi ifinyelela ku- retina .
> Umthombo:
> Ukuvikela Amehlo Akho Embusweni Welanga. Association American Optometric, 2017.