Azikho izinkathazo — lokho akusho ukuthi kufanele ugqoke ama-bifocal noma ama-trifocal angajabulisi.Kubantu abaningi, amalensi aqhubekayo angenalayini ayinketho engcono kakhulu.
Ayini amalensi aqhubekayo?
Amalensi aqhubekayo angamalensi engilazi yemehlo e-no-line multifocal abukeka afana ncamashi namalensi okubona okukodwa.Ngamanye amazwi, amalensi aqhubekayo azokusiza ukuthi ubone ngokucacile kuwo wonke amabanga ngaphandle kwaleyo "migqa ye-bifocal" ecasulayo (kanye nechaza ubudala) ebonakala kuma-bifocals avamile nama-trifocals.
Amandla amalensi aqhubekayo ashintsha kancane kancane ukusuka kwelinye iphuzu ukuya kwelinye endaweni engaphezulu, enikeza amandla afanele amalensi okubona izinto ngokucacile kunoma yiliphi ibanga.
Ama-Bifocal, ngakolunye uhlangothi, anamandla amalensi amabili kuphela - elokubona izinto ezikude ngokucacile kanye namandla esibili engxenyeni engezansi yelensi ukuze abone ngokucacile ebangeni elicacisiwe lokufunda.Ukuhlangana phakathi kwalezi zindawo zamandla ezihluke ngokuphawulekayo kuchazwa "umugqa we-bifocal" obonakalayo onqamula phakathi nendawo yelensi.
Amalensi aqhubekayo, ngezinye izikhathi abizwa ngokuthi "no-line bifocals" ngenxa yokuthi awanawo lo mugqa we-bifocal obonakalayo.Kodwa amalensi aqhubekayo anomklamo we-multifocal othuthuke kakhulu kunama-bifocal noma ama-trifocal.
Amalensi aqhubekayo e-Premium, ngokuvamile anikeza ukunethezeka nokusebenza okungcono kakhulu, kodwa kuneminye imikhiqizo eminingi nemisebenzi eyengeziwe, njengelensi eqhubekayo ye-photochromic, ilensi eqhubekayo ye-bluecut nokunye, nezinto ezihlukahlukene.Ungazitholela efanelekayo ekhasini lethuhttps://www.universeoptical.com/progressive-lenses-product/.
Abantu abaningi baqala ukudinga izibuko zamehlo eziningi ngesikhathi esithile ngemva kweminyaka engu-40 ubudala. Kulapho ushintsho oluvamile lokuguga esweni olubizwa ngokuthi i-presbyopia kunciphisa ikhono lethu lokubona ngokucacile eduze.Kunoma ubani one-presbyopia, amalensi aqhubekayo anezinzuzo ezibonakalayo ezibonakalayo nezimonyo uma kuqhathaniswa nama-bifocals omdabu nama-trifocals.
Idizayini ye-multifocal yamalensi aqhubekayo inikeza izinzuzo ezibalulekile ezingezansi:
Inikeza umbono ocacile kuwo wonke amabanga (kunokuba kube amabanga wokubuka amabili noma amathathu kuphela ahlukene).
Iqeda "ukugxuma kwesithombe" okukhathazayo okubangelwa ama-bifocals nama-trifocals.Yilapho izinto zishintsha khona kungazelelwe ekucaceni nasekumeni okusobala lapho amehlo akho enyakaza emigqeni ebonakalayo kulawa lens.
Ngoba awekho "imigqa ye-bifocal" ebonakalayo kumalensi aqhubekayo, akunikeza ukubukeka kobusha kunama-bifocal noma ama-trifocal.(Lesi sizathu sisodwa kungase kube ukuthi kungani abantu abaningi namuhla begqoka amalensi aqhubekayo kunenombolo egqoke ama-bifocal nama-trifocal ehlangene.)