Njengoba uneminyaka yobudala, ikhono lokubona liwohloka ngisho nalabo bantu abaye baphila umbono ophelele kulo lonke impilo. Njengomthetho, kubantu besifazane nabesilisa abaneminyaka engama-40 ubudala, i-presbyopia iqala, noma ibuke isikhathi eside. Ngokuvamile, le nkinga ayiguquki nakakhulu izinga lempilo, noma kunjalo, liyabonakala lapho lizama ukufunda incwadi noma iphephandaba.
Esimweni esinjalo, odokotela batusa ukuthenga izibuko ezikhethekile zokufunda. Namuhla ku-salon ngayinye ye-optics kunezesekeli ezihlukahlukene ezifanayo, okuphakathi kwazo okuyinto enzima ukuthola imodeli efanelekayo.
Izinhlobo zezibuko zokufunda
Phakathi kokuhlanganiswa okubanzi kwezesekeli ezifanayo ukuhlukanisa izinhlobo ezilandelayo:
- izibuko ezinama-single-focal lenses . Banikeza ubuhle obubonakalayo ekude kwamamitha angu-30-40 ukusuka kwamehlo futhi bahloselwe ukufunda kuphela. Uma ngaphambili usugqoke izibuko noma amalensi okulungiswa kwezinkinga zesifo sofuba, lesi sesekeli kufanele sibe yowesibili, senze umsebenzi wayo ngokushesha. Ngaphansi kwezimo ezinjalo, ngokuvamile uvame ukuthenga izibuko ezigxile ekufundeni ecaleni ukuze azikhiphe isikhathi esithile futhi asuse ngokushesha ngemuva kokufunda izincwadi ezidingekayo;
- ama-glass-bifocal amancane-ama-halves wokufunda anama-lensi, ahlukaniswe ngama-2 optical zones. Ingxenye engenhla yezibuko ezinjalo yenzelwe ukucutshungulwa okuningiliziwe kwezinto ezikude kakhulu, kanti okuphansi ukuthuthukisa umbono oseduze, lapho ukuqondiswa kwamehlo kuqhuma phansi. Ngokuyinhloko, lesi yisimo esibonakala lapho ufunda incwadi noma iphephandaba. Ngenxa yesimiso esincane kakhulu kanye ne-lens, ehlukaniswe ngezigaba ngesici esikhethekile, izibuko ezinjalo zingasetshenziswa ezimweni ezahlukene, ngakho-ke zingashintsha izimbalwa eziningana ngesikhathi esisodwa;
- uhlobo oluhle kakhulu lokufunda izibuko kuze kube yimanje kukhona izesekeli ezinama-lens okuqhubekayo , amandla okukhanyisa okwandisa noma eyancipha kuye ngokuthi kude kangakanani nalokho okucatshangelwayo. Lezi zibuko zenzelwe umuntu ngamunye futhi zibiza kakhulu, ngakho akubona wonke umuntu ongenakho ukuthenga le divayisi.
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Ngokuhlukile kufanelekile ukuphawula izibuko zokufunda amanga . Nakuba odokotela bengasincoma ukufundela endaweni ephindaphindiwe, abantu abaningi abakwazi ukuyeka lo mkhuba. Kulesi simo, ungasebenzisa izibuko ezikhethekile ezizokhipha ukwedlulele ngokweqile emehlweni nangomgogodla wesibeletho. Ngesikhathi esifanayo, bonke abantu bangasebenzisa izinto ezinjalo, kungakhathaliseki ukuthi bebudala kangakanani nokuthi kuba khona izinkinga ze-ophthalmologic.
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Njengoba ubona, uma ukhetha izibuko zokufunda, kubalulekile ukucabangela ukungabonakali kakhulu, njengemisebenzi ephathekayo yemodeli ethile. Nakuba kunjalo, futhi ukuklama akufanele kukhohliwe.
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