1.59 Ilensi yePolycarbonate eqhubekayo ye-PC
Kungani Amalensi ePolycarbonate?
I-Polycarbonate iyinto ephikisana kakhulu nomthelela. Yathuthukiswa ngeminyaka yawo-1970 ukuze isetshenziswe emkhathini okuhlanganisa izigqoko zokuzivikela zikasomkhathi namawindi ophephela omoya wemikhumbi-mkhathi, ngakho-ke uma kungekho okunye, kuhle kakhulu...
Ngawo-1980 i-polycarbonate yayisetshenziselwa amalensi njengoba yayizacile, ilula futhi imelana kakhulu kunengilazi. Namuhla iyindinganiso yezibuko zokuphepha, izibuko zezingane nezibuko zezemidlalo, ngenxa yokumelana kwayo nomthelela omuhle kakhulu.
I-Polycarbonate iyi-thermoplastic eqala inqubo yokwenza amalensi njengama-pellets abunjwa ngenqubo ebizwa ngokuthi i-injection molding. Phakathi nale nqubo ama-pellets acindezelwa ngaphansi kwengcindezi ephezulu kakhulu esikhunjeni se-lens, bese epholiswa ukuze akhe i-plastic lens eqinile.
Kanye nokuqina kwawo, amalensi e-polycarbonate ngokwemvelo avimba u-100% wemisebe yelanga ye-UV ngaphandle kwesidingo sokumbozwa, okusho ukuthi amehlo akho avikelwe ngendlela efanele. Lawa ma-lens anikezwa futhi ngezinketho ezibanzi kakhulu (njengamalensi aqhubekayo) kunezinye izinto ezisebenza ngamalensi aphezulu.
Nakuba i-polycarbonate ngokungangabazeki yenza ilensi imelana nomthelela wangempela, ukuqina kwayo kuza ngentengo. I-Polycarbonate inokuboniswa kwelensi okuningi kakhulu kunepulasitiki noma ingilazi, okusho ukuthi i-anti-reflective coating ingadingeka. Ngaphezu kwalokhu i-polycarbonate inenani le-Abbe elingama-30 nje, okusho ukuthi inikeza ikhwalithi yokubona empofu ngokuqhathaniswa nezinketho okwaxoxwa ngazo ngaphambili.
Amalensi E-Presbyopia - Aqhubekayo
Uma uneminyaka engaphezu kuka-40 futhi unobunzima bokubona kwakho eduze nalapho ufinyelela ingalo, kungenzeka ukuthi ubhekene ne-presbyopia. Amalensi aqhubekayo ayisixazululo sethu esingcono kakhulu se-presbyopia, akunikeza umbono obukhali kunoma yiliphi ibanga.
Yiziphi Izinzuzo zamalensi aqhubekayo?
Njengamalensi e-bifocal, amalensi e-multifocal aqhubekayo enza umsebenzisi akwazi ukubona kahle ebangeni elihlukene ngelensi eyodwa. Ilensi eqhubekayo ishintsha kancane kancane amandla ukusuka phezulu kwelensi ukuya phansi, inikeze uguquko olushelelayo ukusuka ekubonweni kwebanga ukuya ekuboneni okumaphakathi/kwekhompuyutha ukuya kumbono oseduze/wokufunda.
Ngokungafani nama-bifocals, amalensi ezinto eziningi athuthukayo awanayo imigqa ehlukile noma amasegimenti futhi anenzuzo yokunikeza umbono ocacile ebangeni elikhulu lamabanga, angakukhawuleli kumabanga amabili noma amathathu. Lokhu kubenza babe ukukhetha okudumile kubantu abaningi.
Ungasho Kanjani Uma Amalensi Aqhubekayo Ekulungele?
Noma ilensi eqhubekayo ikuvumela ukuthi ubone amabanga aseduze nakude ngokucacile, lawa ma-lens awawona inketho elungile yawo wonke umuntu.
Abanye abantu abalokothi bazijwayeze ukugqoka ilensi eqhubekayo. Uma lokhu kwenzeka kuwe, ungase ube nesiyezi njalo, izinkinga zokubona ukujula, nokuhlanekezelwa kwe-peripheral.
Okuwukuphela kwendlela yokwazi ukuthi ama-lens aqhubekayo azokusebenzela yini ukuthi uwazame futhi ubone ukuthi amehlo akho ajwayela kanjani. Uma ungajwayelani nezimo ngemva kwamasonto amabili, udokotela wakho wamehlo angase adinge ukulungisa amandla kulensi yakho. Uma izinkinga ziqhubeka, ilensi ye-bifocal ingase ikufanelekele kangcono.
