Lapho iziguli ziya kodokotela bamehlo, kudingeka zenze izinqumo ezimbalwa.Kungase kudingeke bakhethe phakathi kwamalensi okuxhumana noma izibuko zamehlo.Uma kukhethwa izibuko zamehlo, khona-ke kufanele banqume amafreyimu namalensi futhi.
Kunezinhlobo ezahlukene zamalensi, isibonelo, ukubona okukodwa, i-bifocal kanye namalensi aqhubekayo.Kodwa iziguli eziningi zingase zingazi ukuthi ziwadinga ngempela amalensi e-bifocal noma aqhubekayo, noma uma amalensi ombono owodwa anele ukunikeza umbono ocacile.Ngokuvamile, amalensi ombono owodwa yiwona ajwayeleke kakhulu abantu abaningi abawagqokayo lapho beqala ukufaka izibuko.Empeleni abantu abaningi akudingeki bakhathazeke ngamalensi e-bifocal noma aqhubekayo uze ube neminyaka engama-40 noma ngaphezulu.
Ngezansi kunolunye ulwazi olunzima ukuze unqume ukuthi yimaphi amalensi akulungele, okuhlanganisa kokubili izici zokubona kanye nezindleko.
I-Single Vision Lens
Izinzuzo
Uhlobo lwamalensi oluthengeka kakhulu, olusetshenziselwa ukulungisa ukubona eduze kanye nokubona kude.
Ngokuvamile asikho isikhathi sokulungisa esidingekayo ukuze ujwayele.
Ilensi eshibhe kakhulu
Ukubi
Lungisa ukujula kombono okukodwa kuphela, eduze noma kude.
Ama-Bifocal Lens
Izinzuzo
Ingxenye eyengeziwe inikeza kokubili ukulungiswa kombono oseduze nokwebanga.
Isixazululo esisebenzayo sezindleko zokujula kombono okuningi.
Ishibhile uma iqhathaniswa, ikakhulukazi uma iqhathaniswa namalensi aqhubekayo.
Ukubi
Ulayini ohlukile, ongahlukanisiwe kanye nendilinga eyingxenye emise eduze nelensi yokubona.
Isithombe sigxuma lapho usuka ebangeni uye eduze kombono futhi ubuyela emuva futhi.
Amalensi aqhubekayo
Izinzuzo
Ilensi eqhubekayo ihlinzeka ngokulungiswa kombono oseduze, omaphakathi, nowebanga elide.
Susa isidingo sokushintsha phakathi kwamapheya amaningi ezingilazi.
Ayikho imigqa ebonakalayo kwilensi yoshintsho olungenamthungo phakathi kwezindawo ezi-3.
Ukubi
Isikhathi sokulungisa siyadingeka ukuze kuqeqeshwe iziguli ngokusebenzisa izindawo ezintathu ezihlukene zokubona.
Abasebenzisi abasha bangazizwa benesiyezi noma isicanucanu baze babajwayele.
Kubiza kakhulu kunokubona okukodwa noma amalensi e-bifocal.
Ngethemba ukuthi ulwazi olungenhla luwusizo kuwe ukuze uthole ukuqonda okungcono ngezinhlobo ezahlukene zamalensi, kanye nezindleko.Noma kunjalo, indlela engcono kakhulu yokunquma ukuthi iyiphi ilensi elungile ukuxhumana nodokotela bamehlo abangochwepheshe.Bangakwazi ukuhlola kahle izidingo zempilo yamehlo akho kanye nokubona, futhi batuse ekufanele kakhulu.