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yini ilensi eqhubekayo? Amalensi aqhubekayo awuhlobo lwamalensi engilazi yamehlo anikeza ukuqhubeka okubushelelezi nokungenamthungo kwamandla amaningana okulungisa ukubona ngaphakathi kwelensi eyodwa.Aziwa nangokuthi ama-no-line bifocals noma ama-varifocal lens.Ngokungafani nendabuko...Funda kabanzi»
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Kuyini ukukhanya okuluhlaza okwesibhakabhaka?Ubude begagasi bokukhanya okubonakalayo bungu-380-780NM, kanti lokho kokukhanya okuluhlaza okwesibhakabhaka kungu-380-50NM, okungenye yobude obufushane kakhulu namandla aphezulu.Kukuphi ukukhanya okuluhlaza okwesibhakabhaka?Ukukhanya okuluhlaza kukhona ezintweni eziningi abantu...Funda kabanzi»
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1. Ubani ofanele amalensi e-multifocal aqhubekayo?Ifanele ukulungiswa kokwehla, ngesikhathi esifanayo ukubona kude, okumnandi noma ngesikhathi esifanayo ukubona kude nezidingo ezahlukene zabantu (ikakhulukazi ukubona izidingo zekhompiyutha neselula), akudingeki ...Funda kabanzi»
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Abantu bavame ukubuza ukuthi badinga yini ukugqoka ingilazi evimbelayo eluhlaza okwesibhakabhaka ukuze bavikele amehlo abo lapho bebuka ikhompuyutha yabo, i-pad noma umakhalekhukhwini.Ingabe i-myopia laser yalungisa ngemva kokuhlinzwa kwakudingeka ugqoke izibuko ze-anti blue ray ukuze uvikele iso?Ukuphendula lezi q...Funda kabanzi»
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Amalensi aqhubekayo, abhekisela kumalensi agxile kakhulu, agqokwa kakhulu eYurophu nase-United States, kodwa aduma eShayina kuphela eminyakeni eyi-10 edlule.Ake sibheke isithombe sezibuko ze-multifocal eziqhubekayo.Namuhla, abaningi...Funda kabanzi»
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Izinga lokuduma kwamafilimu athuthukayo ezifundeni ezithuthukile njenge-Europe ne-United States selidlule ama-70%, futhi amafilimu aqhubekayo athatha u-30% wevolumu yokuthengisa, ngokuthengiswa kwaminyaka yonke cishe kwezigidi ezingu-500.Kodwa-ke, amafilimu athuthukayo angaphansi kuka-3% adumile ...Funda kabanzi»
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Izinto ezintathu ezinkulu zamalensi optical: imuphi umehluko othize kanye nezinzuzo kanye nokubi kwamalensi amathathu adumile abonakalayo.Ukufaka izibuko zolwazi lwelensi, sethule uhlobo lomsebenzi wamalensi, ubunjalo bento ethe xaxa...Funda kabanzi»
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Ilensi yangokwezifiso yegaraji ebizwa ngokuthi yisiqephu segaraji, isethi yokukhiqiza.Ilensi eyenziwe ngokwezifiso yegaraji isho umkhiqizo ongakwazi ukuhlangatshezwa wukunikezwa kwezingcezu ezikhona futhi usetshenziselwa ukuhlangabezana nezidingo ezikhethekile.Lolu hlobo lwamalensi luhlukile kumalensi ajwayelekile ajwayelekile, okuthi...Funda kabanzi»
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Amalensi ashintsha umbala aya ngokuya ethandwa ngenxa yokuthi awagcini nje ngokunikeza ukuvikelwa kwe-UV, kodwa futhi afanele ukugqoka kwansuku zonke.Iphuzu elibaluleke kakhulu ukuhlangabezana nezidingo zamaqembu ahlukene abantu, njenge-presbyopia, i-myopia, ukukhanya okuyisicaba nokunye.Ngakho, h...Funda kabanzi»
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Ukukhethwa kwelensi kungacatshangelwa ezicini ezintathu: impahla, umsebenzi kanye nenkomba ye-refractive.impahla Izinto ezijwayelekile yilezi: amalensi engilazi, amalensi eresin namalensi e-PC Iziphakamiso: IZINGANE ziyasebenza, ngokucatshangelwa kokuphepha, ukukhetha okungcono kakhulu kwamalensi eresin noma i-PC lens...Funda kabanzi»
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Ngokuthuthukiswa okuqhubekayo kwezidingo zekhwalithi zabathengi, izidingo zekhwalithi zabantu zamalensi optical nazo ziyathuthukiswa kancane kancane, ngesikhathi esifanayo, izidingo zomhlaba zamalensi optical nazo ziya ngokuya ziqinile.Ungalihlonza kanjani uphawu lwekhwalithi yalo...Funda kabanzi»
