Maererano nekufungidzira kwenyika yeWorld Health Organisation (Ndiani), nhamba yevanhu vari kutambura nemweyachikurupakati pevanhu vane maziso ezvechokwadi, uyezvinesvikaed2.6 Bhirioni muna 2020. Myopia rave dambudziko guru repasi rese, kunyanya zvakakombamuAsia. Iyo myopia rate muChina is 47.1%, inenge hafu yehuwandu hwese.Zvinoreva imweKunze kwevaviri vaviri vanhu vanofamba-famba.
Myopia chiyero munyika dzakasiyana
Mazuva ano,nakuwedzera kwakakosha muyero myopia, chiyero chekupfekamagirazi ari kuwedzera gore pagore.Seimwe yemyopicvarwere, haVeyakanangana nechinhusizvotermine thelens mhando kana uchifungazisoPfeka dhizaini uye lens basa?
Ngatidzidze chimwe chinhukupinzat nezve the thelens zvinhu uye index yekugadzirisa.
Manhamba akanaka anoda kufanana,Transmittanceuye kujekesa. TAnonyanya kujairika lens nhasi imhedzisiro yemakore ekuongorora.
| Kuvandudzwa kwe lens zvinhu Zvizhinji zvezvinyorwa zvekutanga zvakaitwa neruoko nezvinhu zvakasikwa zvakaita se quartz nekristaro. Nekuvandudzwa kwegirazi kugadzirwa uye tekinoroji yekumaindasitiri, zvisikwa zvakasikwa zvakakurumidza kutsiviwa negirazi renyaya iyo yakatanga kupa mamwe mabasa. Kubva kuma1960 kusvika kuma1980, zvakagadzirwa kubva kuPeturu, takatsiva girazi rezvivakwa zvaro zvakanaka, zvivakwa zvakachengeteka uye zvakave zvinhu zvakakura zvezvivakwa zvemaziso kusvika zvino. |
Sezvinonyanya kufarirwa lens zvinhu, midziyo yekugadzira inomiririrwa neCr-39 Resin Yakagadziriswa nePPG, Mr Rein Resin Yakagadziriswa naMitsui,uyeKres Resin Yakagadziriswa Na Koc, Korea, nezvimwewo
Iyo lens zvinhu zvinoratidza indekisi yekugadzirisa ye lens. Lens Refractive Index ndiyo chiyero chekunyepedzera kwekunyepedzera kwekunomhanya muVacuum kuparadzaniswa kwekunyepedzera mukumhanya mune lens zvinyorwa, kuratidza kugona kwekuratidzira kwe lens kujekesa. Kazhinji, iyo yakakwira indekisi yekugadzirisa ye lens, iyo yakaonda lens.
Parizvino,Universe Opticaline index yeiyo 1.50, 1.53, 1.56, 1,67, 1.74 uye zvimweindekisi yelens. Panyaya yezvinhu, isu takachengeta tarisiro yepedyo yekubatana nePPG yeUnited States uye Mitsui makemikari eJapannaizvozvowoMamwe makambani anoomeswa anogadzira nezvakanaka zvakaringana.
CR-39 Raw zvinyorwa zvakatengwa kubva PPG, USA, inoshandiswa kugadzira index 1.50 LENS.Inonyanya kufarirwa mumusika bEas Norec of the yakakwira abbe coeffostient, yakanaka kwazvo yekuita kuita, kuchengetedza kwekuchengetedzauyeMari yakawanda-inoshanda.
Iyo 1.53 Refractive Index Lens inobva pane zvakakosha zvinyorwa, trivex, zvakare kubva kuPPG muUS. Trivivex lens zvinhu zvinokanganisa zvakanyanya-kuramba. Nekuti ivo vakareruka kupfuura zvakajairika lens, trivivex lenses varikugona choseSarudzo yeziso revana, rive risingaperi remitambo, yemitambo goggles, kuchengetedzeka maziso, uye nemitambo yemitambo.
Nebudiriro oMagirazi, iyo "lens", sekuwedzera kukuru kwemagirazi, anogara achivandudza uye kusimudzirwa nekuchinja kwengasi.ZvakasikwaOptical 1.60, 1.67, 1.74kukwiriraindexLens zvishandiso zvakagadzirwa naMR Series of Mitsui Chemical. Mr SeriesMhando yepamusoro uye dzakapfuura zvinhu, neyemukati mexex index, yakakwira Abbe nhamba, yakaderera chaiyo gravity, yakanyanya kukanganisa kuramba uye zvimwe zvakanakira.
Iko kuenderera mberi kugadzirisa kwe lens zvinhuR & duye tekinorojiSevhalens chigadzirwasInnourion. Lens lens zvisvinirosarudza iyoKugadzikanazvemhando, Transmittance, kujekesa uye kusingagumi mhedzisiro.
ZvakasikwaOptical yave kuomerera kune iyo mutemo wekuhwina-kuhwina kushandira pamwe uye kuwirirana kubudirira. IsuTeerera kune inzwi revatengi,kusvika pakuzivamutengis'zvinodiwa, teerera kumusikatsika, sakakugadzira chiratidzo chakajeka.