Mazano Okutenga Magetsi (uye Akachengeteka) Magirazi ezuva
Paunotenga magirazi emasikati, vanhu vazhinji vanowanzotarisa mutambo pakutanga, pane kushanda. Kunyange zvazvo nguva dzose iri kunakidza kuvhara pamusana mutsva we-uber-cool shades, chengeta mupfungwa chikonzero chakakosha chekuvapfeka pakutanga: kuchengetedza maziso ako. Ultraviolet rayation (UV rays) kubva kunezuva inogona kuva nengozi, dzimwe nguva inokonzera kukanganisa kusingagadziriswi pane zvatinoona.
Kuti udzivirire maziso ako, unofanirwa kupfeka mhando yakachena yemasikati, sezvo kupfekedza rudzi rwakashata kunogona kukonzera kukuvadza kupfuura kupfeka magirasi zvachose. (Tinted glasses isina kuchengetedzwa kweVV inogona kukuvadza zvakanyanya maziso kupfuura kupfeka magirasi.) Nezvo mupfungwa, hezvino zvinhu zvishomanana zvekutarisa paunenge uchitenga kune avo vatsva.
- UV Kudzivirira: Zvidzidzo zvinoratidza kuti mazai eUV anogona kukurumidza kufambiswa kwemahara . Zuva rinopenya rinogona kukonzera pinguecula uye pterygium-benign kukukura pamusoro peziso. UV radiation inogona kukonzera kenza yemapfupa uye ganda rakakomberedza meso. UV radiation inogonawo kukonzera photokeratitis , yenguva duku asi inorwadza kupisa pamakorome, yakajeka dome-sarudzo yakatarisana nechemberi kweziso. Photokeratitis inowanzoitika apo mvura kana chechando ichifamba pasina zuva rinodzivirirwa. Zvidzidzo zvakare zvinoratidza kuti kutsvaga kwenguva refu kwemazuva ekukuvadza kwezuva kungakonzera kukura kwekushaiwa kwema macular . Pamwe chete, unofanira kutarisa magirazi anovhara zvinenge 99 muzana yeV-A uye UV-B, uye chengetedza 75-90% yerima rinooneka.
- Tinted Lenses: Mazhenje angangodaro akave akavezwa mavara akasiyana-siyana. Sarudzo yako yemuvara inogona kuvimba nekubatanidzwa kwemaitiro uye chinangwa. Nekushandiswa kwevanhu vose, mavara mavara, mawere, machena, kana maronda anokurudzirwa kuitira kuti kuderedze ruvara rwemvara. Grey chisarudzo chinozivikanwa sezvo chinotibvumira kuziva nekuona mavara akawanda zvakasikwa. Brown nemavhesi emagetsi anowedzera kusiyanisa. Masoko matsvuku anoita kuti kuve nekukanganisika kwemavara asi akanaka kune mamiriro ekudzivirira. Orange uye yellow lenses zvine kusiyana kwakasiyana-siyana kusimbisa nekudzika kwekunzwisisa, asi kunowanzosausa mavara. (Yemajisi lenzi anowanzova sarudzo yevashandi vegorofu nevapfuri.) Pakusiyanisa kwacho nekusimudzirwa kwekunzwisisa zvinhu. Bhuruu kana lenzi yepepuru inosarudzwa zvikuru kunyorwa uye mafanho, sezvo vasingabatsiri maonero ekuona.
- Polarized Lenses : Zvipfeko zvakawanda zvemasikati zvakarisa lenzi. Ramba uchiyeuka kuti haufaniri kuva ne-lens polarized kuti uvhare mazai eVV. Zvisinei, vanhu vazhinji vanonyanya kusununguka vakapfekedza lens polarized, sezvo vachiita basa rakanaka rekuvhara mafungiro uye kumira. Vanhu vanoshanda panze muchiedza chakavhenekera vanofarira lens polarized. Majekesa anonzi polarized anobvumirawo vabati vehove kuti vaone zvakadzika mumvura.
- Mifananidzo yeChotochromatic Lenses : Aya majekiseni anonhuwa kana kuti akajeka paanopinda muchiedza chezuva. Paanodzoka mumba, lenzi inodzokera kune yakajeka. Mifananidzo yephotochromatic inguva yakanaka kune avo vasingatsvaki kutakura magirazi maviri ezvisikwa pamwe chete nemakirasi avo emazuva ose. Zvisinei, mavara akawanda emashandisi echisochromatic haasvibisi zvachose mukati memotokari, achiita magirazi emagetsi asingasviki. Kune avo vanosarudza girazi rima mukati memotokari, rimwe divi rimwe remasikati rinofanira kudiwa.
- Polycarbonate Lenses: Polarcarbonate lenses ndeimwe yezvinhu zvakanyanya-zvinopikisa lenses zviripo, zvichichengetedza vanhu vanoda kupfeka magirazi ezuva kana vachifarira mitambo kana zvimwe zvinhu zvinokuvadza. Aya majekisi haazoputsiki semirasi yegirasi kana mapurasitiki epasi. Polycarbonate lens inonyanya kuoma asi inononoka nyore. Iva nechokwadi chekutarisa avo vane mavara asina kudzivirira.
Shoko Rinobva
Cherechedza kuti hapana magetsi ehurumende anotarisirwa aripo pamusoro pehuwandu hwekuvhenekera kweVV yakavharwa nemagetsi ezuva. Kunyange zvakadaro, American Optometric Association inokurudzira kuti magirazi ezuva anovhara zvinenge 99% zvemazuva anovha. Uyewo, hapana yunifomu yekutsvaga yezvigadzirwa zvemagetsi zvinorevei kuti yakawanda mazai eVV ari kudzivirirwa. Mavara aya anogona kunge ari kunyengedza, saka verenga zvinyatsocherechedza. Maziso akawanda ane chiridzwa chinogona kuyera huwandu hweUV hwakavharwa, saka kana iwe unonetseka pamusoro pezvikwata zvemasikati, izvi zvinogona kunge zvakasarudzika.
Kunobva:
EyeSmart, Mazhizha Evha Maso Okuchengeteka Kweziso.
American Academy of Ophthalmology (AAO), 16 Mbudzi 2014.