Dukurikije ibigereranyo by’umuryango w’ubuzima ku isi (OMS), umubare w’abantu barwaye myopiya nikininimubantu bafite amaso yubuzima buke, kandiifitekugeraedMiliyari 2.6 muri 2020. Myopia yabaye ikibazo gikomeye ku isi, cyane cyanemuri Aziya. Igipimo cya myopiya mu Bushinwa ni 47.1%, hafi kimwe cya kabiri cy'abaturage bose.Bisobanura imwekuri buri bantu babiri bareba kure.
Igipimo cya Myopia mu bihugu bitandukanye
Muri iki gihe,hamwe nakwiyongera cyane mu gipimo cya myopiya, igipimo cyakwambaraibirahuri nabyo byiyongera uko umwaka utashye.Nka kimwe murimyopicabarwayi, haveyitaye ku kintusdeKurangizalens ubuziranenge mugihe usuzumyeijishokwambara igishushanyo mbonera?
Reka twige ikintuimportanhafi ilens ibikoresho nibikoresho byerekana.
Lens nziza isaba uburinganire,koherezano gusobanuka. T.lens ikunze kugaragara uyumunsi nigisubizo cyimyaka yubushakashatsi.
| Iterambere ryibikoresho Ibyinshi mu bikoresho byambere byakozwe nintoki hamwe nibikoresho bisanzwe nka quartz na kristu. Hamwe niterambere ryogukora ibirahuri nubuhanga bwinganda, ibikoresho bisanzwe byasimbuwe nikirahure cya optique cyatangiye gutanga imirimo myinshi. Kuva mu myaka ya za 1960 kugeza 1980, ibikoresho bya resin, bikozwe muri peteroli, byasimbuye ibirahuri kubintu byiza bya optique, gutunganya neza ndetse nibintu byoroheje bifatika, kandi bihinduka ibikoresho nyamukuru byindorerwamo z'amaso kugeza ubu. |
Nkibikoresho byamamaye cyane kumasoko, ibikoresho bya resin bigaragazwa cyane na CR-39 resin yakozwe na PPG, MR resin yakozwe na Mitsui,naKR resin yatunganijwe na KOC, Koreya, nibindi.
Ibikoresho bya lens byerekana indangagaciro yo kwangirika. Indangantego ya Lens ni igipimo cyumuvuduko ukwirakwiza urumuri muri vacuum n'umuvuduko ukwirakwiza urumuri mubintu bya lens, byerekana ubushobozi bwo kugabanya lens kumucyo. Muri rusange, urwego rwo hejuru rwerekana indangagaciro, ninziza.
Kugeza ubu,Isanzure ryizaifite indangantego ya 1.50, 1.53, 1.56, 1.60, 1.67, 1.74 nibindiindanga yalens. Ku bijyanye n'ibikoresho, twakomeje ubufatanye bwa hafi na PPG yo muri Amerika na Mitsui Chemical yo mu Buyapanikimwe naandi masosiyete y'ibikoresho fatizo hamwe nibikorwa byagezweho.
CR-39 ibikoresho fatizo byaguzwe muri PPG, muri Amerika, bikoreshwa mugukora indangagaciro 1.50.Birashimwa cyane kumasoko bImpamvu ya coefficient ya Abbe yo hejuru, imikorere myiza ya optique, imikorere yumutekanonabidahenze cyane.
Indangantego ya 1.53 yangiritse ikomoka kubintu bidasanzwe, Trivex, nayo ikomoka muri PPG muri Amerika. Ibikoresho bya Trivex birwanya ingaruka cyane. Kuberako yoroshye kurenza lens zisanzwe, Trivex lens nibyiza cyaneguhitamo imyenda y'amaso y'abana, inkweto z'amaso zitagira shinge na rugero, indorerwamo za siporo, inkweto z'umutekano, n'imyenda y'imikino.
Hamwe naiterambere of ibirahure, "lens", nkibikoresho nyamukuru byibirahure, bihora bishya kandi bikazamura hamwe nimpinduka zigihe.IsanzureIbyiza 1.60, 1.67, 1.74muremureindangagacirolens ibikoresho fatizo bikozwe muri MR ya seriveri ya Mitsui Chemical. Urukurikirane rwa MRni ibikoresho byiza kandi bigezweho, hamwe nigipimo kinini cyo kwanga, umubare munini wa Abbe, uburemere buke bwihariye, kurwanya ingaruka nyinshi nibindi byiza.
Gukomeza kunoza ibikoresho bya lensR&Dn'ikoranabuhangakuzamuralenssguhanga udushyaion. Lens ibikoresho fatizoKugena iituzey'ubwiza, guhererekanya, gusobanuka n'ingaruka ziboneka.
Isanzureoptique yagiye yubahiriza politiki yubufatanye-bunguka no kugeraho. Twebweumva ijwi ryabakiriya,menyaumukiriyas'ibikenewe, witondere isokoimpengamiro, nkakurema icyerekezo gisobanutse.