I-Varifocalals kanye nama-BIFOCALS yizo zombili izinhlobo zelensi ye-eyeglass eyenzelwe ukubhekana nezinkinga zombono ezihlobene ne-Presbyopia, isimo esihlobene nobudala esithinta umbono. Ngenkathi zombili lezi zinhlobo zamalensi zisiza abantu babone kumabanga amaningi, bayehluka ekuklameni nasekusebenzeni. Kulesi siqhathaniso esiphelele, sizohlola ukungezwani okusemqoka phakathi kwama-varifocalals kanye nama-bifocals, kufaka phakathi ukwakhiwa kwabo, izinzuzo, izithiyo, kanye nokucatshangelwa ngokukhetha omunye komunye.
Ama-bifocals: Ama-bifocals asungulwa nguBenjamin Franklin ngasekupheleni kwekhulu le-18 futhi aqukethe izingxenye ezimbili ezihlukile zelensi. Ingxenye engenhla ye-lens isetshenziselwa ukubuka kwebanga, ngenkathi ingxenye engezansi iqokwa ngombono oseduze.
Ukwakha:Ama-lens we-biforal abonakala ngomugqa obonakalayo ovundlile ohlukanisa izingxenye ezimbili zelensi. Lomugqa ubizwa nge- "BIFOCAL LINE," futhi ihlinzeka ngenkomba ecacile yokubuka yenguquko phakathi kwebanga nezingxenye eziseduzane ze-lens.
Izinzuzo ze-Optical:Ithuba eliyinhloko lamalensi we-bifocal ukwahlukana kwawo okucacile phakathi kwebanga nangombono oseduze. Inguquko evumayo kulayini we-BIFOCAL ivumela abagqoke ukushintshela kalula phakathi kwamabanga amabili agxile ngokubheka engxenyeni efanele yelensi.
Izingqinamba:Enye yezingqinamba eziphambili ze-BIFOCALS umugqa obonakalayo, ongaba ubumnandi obungatholakali kwabanye abantu. Ngokwengeziwe, ukuguqulwa okusheshayo phakathi kwezingxenye ezimbili zelensi kungadala ukungaphatheki kahle okubonakalayo noma ukuhlanekezela, ikakhulukazi ngesikhathi sokushintsha ngokushesha phakathi kwebanga nezinto eziseduze.
Ukucatshangelwa:Lapho ucubungula ama-bifocals, abantu kufanele bazi ngezidingo zabo zokubona nokukhetha. Ama-BIFOCALS ayindlela efanelekile kulabo abanezidingo ezihlukile nezingaqageli zebanga kanye nokulungiswa kombono.
Varifocals:I-Varifocalals, eyaziwa nangokuthi ama-lens athuthukayo, nikeza inguquko engenamthungo phakathi kwamabanga amaningi okugxila ngaphandle komugqa obonakalayo otholakala kuma-biforals. Lawa ma-lens ahlinzeka ngokulungiswa kwebanga, eliphakathi nendawo, kanye nombono oseduze ngaphakathi kwedizayini eyodwa yelensi.
Ukwakha:Amalensi ahlukahlukene afaka ukuqhubeka kancane kancane kwamandla welensi kusuka phezulu kuya phansi, okuvumela abagqoke ngokuthungatha ngaphandle komthungezela ukugxila kwabo phakathi kwamabanga ahlukene ngaphandle komugqa ohlukile ngaphandle komugqa ohlukile. Ngokungafani nama-bifocals, amalensi ahlukahlukene awunalo ukwahlukaniswa okubonakalayo kwengxenye, enikeza ukubukeka okungokwemvelo nokubukeka okuhle.
Izinzuzo ze-Optical:Inzuzo eyinhloko ye-Varifocals yikhono labo lokuhlinzeka ngokuqhubeka, ukulungiswa kokubona kwemvelo kumabanga ahlukahlukene. Lo mklamo uvumela abagqoke ngokushelela ukuguqulwa phakathi kokude, okuphakathi, kanye nombono eduze ngaphandle kokuthola ukushintshwa okusheshayo okuhambisana namalensi we-biforal.
Izingqinamba:Ngenkathi ama-varifocals enikeza okuhlangenwe nakho okubonakalayo okungokwemvelo, abanye abagqokile bangadinga isikhathi sokujwayela imvelo yamalensi. Lesi sikhathi sokulungiswa, esivame ukubizwa ngokuthi "ukuzivumelanisa nezimo," singafaka phakathi izingxenye ezahlukahlukene zombono ngaphakathi kwelensi nokufunda ukusebenzisa i-lens ngempumelelo yemisebenzi ehlukahlukene.
Ukucatshangelwa:Lapho ucabanga ngokuhlukahlukana, abantu kufanele bacabangele indlela yabo yokuphila nemikhuba yokubona. Ama-lens ahlukahlukene alungele labo abadinga ukulungiswa kombono okungenamthungo kuwo wonke amabanga amabanga amaningi futhi afisa ukwakheka okuqondayo nokuhle kakhulu.
Ukukhetha phakathi kwama-varifocalals kanye nama-bifocals: lapho unquma phakathi kwe-varifocalals kanye nama-bifocals, kufanele kubhekwe izinto eziningana ukuze uqinisekise inketho efanelekayo kakhulu yokuthanda okuthandayo nezidingo ezibukwayo.
Indlela yokuphila Nemisebenzi:Cabanga ngemisebenzi ethile nemisebenzi edinga umbono ocacile kumabanga ahlukene. Isibonelo, abantu abasebenza emsebenzi wabo bafaka amashifu ajwayelekile phakathi kokude nombono oseduze bangazuza ekuguqukeni komthungo okunikezwe yi-varifocals. Ngakolunye uhlangothi, labo abanezidingo zombono ezingabikezelwa ngokwengeziwe bangathola ama-bIfocals ukuze abe yisinqumo esisebenzayo.
Izintandokazi Zobuhle:Abanye abantu bangaba nezintandokazi eziqinile ngokubonakala kwezibuko zabo zamehlo. I-Varifocalals, ngokungabikho kwawo komugqa obonakalayo, kuvame ukunikela ngenketho ejabulisa ubuhle bama-fears ababeka phambili ukubukeka komthungo, ukubukeka kwesimanje. Ama-BIFOCALS, ngomugqa wawo ohlukile we-bifocal, angahle athandeke ngaphansi kokuma ubuhle.
Induduzo Nokuvumelana Nezimo:Ukucatshangelwa kufanele kunikezwe esikhathini sokulungiswa okudingekayo kuzo zombili izinhlobo ze-varifocals kanye nama-bifocals. Ngenkathi ama-varifocals enikeza ukuguqulwa okwengeziwe kwemvelo phakathi kwamabanga agxile, abagqoke kungadinga isikhathi sokuzivumelanisa ne-Lens Lens Eqhubekayo. Ama-bifocal faan angathola ukuguqulwa okusheshayo ngenxa yokwahluka okucacile phakathi kwebanga nezingxenye eziseduze nombono.
Izidingo Zombono Nezindlela Zokubona:Abantu abanemiyalelo obuyinkimbinkimbi noma izinselelo ezithile ezibukwayo bangathola ukuthi uhlobo oluthile lwelensi luvumelana nezidingo zabo. Kubalulekile ukubonana nochwepheshe wokunakekelwa kwamehlo ukuthola inketho ye-lens efaneleke kakhulu ngokususelwa izidingo zombono ngamunye.
Ekuphetheni, ama-varifocalals kanye nama-biforals ahlukako ekwakhiweni, izinzuzo zokubona, izithiyo, kanye nokucatshangelwa kwalabo abagqokayo. Ngenkathi ama-bifocals enikeza umehluko ocacile phakathi kwebanga nombono onombono onomugqa obonakalayo, i-varifocalals anikeza ukuguqulwa okungenamthungo phakathi kwamabanga amaningi agxile ngaphandle kwengxenye ebonakalayo engenayo. Lapho ukhetha phakathi kwama-varifocalals kanye nama-bifocals, indlela yokuphila, okuthandwa kakhulu, induduzo, ukuguqulwa, kanye nezidingo zombono ngamunye kufanele zonke kufanele zibhekwe. Ngokuqonda izici ezihlukile kanye nokucatshangelwa okuhambisana nohlobo lwelensi ngayinye, abantu bangenza isinqumo esinolwazi sokubhekana nezidingo zabo ezithile zombono.
Isikhathi sePosi: Feb-04-2024