Akunazinkathazo - lokho akusho ukuthi kufanele ugqoke ama-bocasals angathandeki noma ama-torfacals. Kubantu abaningi, ama-lens athuthukile angenamkhawulo ayindlela engcono kakhulu.
Yini ama-lens athuthukayo?
Ama-lens athuthukayo awakho ama-multifocal eyeglass lens abukeka efana ne-lens eyodwa yombono. Ngamanye amagama, ama-lens athuthukayo azokusiza ukuthi ubone kahle kuwo wonke amabanga ngaphandle kwalabo abacasulayo (nobudala obuchazayo) "imigqa ye-biforal" ebonakalayo kuma-biforals ajwayelekile nezitha.
Amandla welensi athuthukayo aguquka kancane kancane esuka ePhoyinti ukuze akhombe ngaphezulu kwelensi, enikeza amandla amalensi afanele okubona izinto ngokucacile kunoma yiliphi ibanga.
Ngakolunye uhlangothi, ama-bifocals, anamandla amabili kuphela amalensi - elilodwa lokubona izinto ezikude ngokucacile nangamandla wesibili engxenyeni engezansi yengxenye yelensi yokubona ngokucacile ebangeni elicacisiwe lokufunda. Ukuhlangana phakathi kwalezi zindawo ezihlukile ezihlukile kuchazwa "umugqa we-biforal" obonakalayo osikiwe phakathi nendawo yelensi.
Ama-lens athuthukayo, kwesinye isikhathi abizwa ngokuthi "akukho-bIfocals" Kepha ama-lens athuthukayo anomklamo owengeziwe we-multifocal othuthukile kakhulu kune-bifocals noma ama-trifocals.
Ama-lens athuthukayo ePrimiyamu, ajwayele ukuhlinzeka ngenduduzo engcono kakhulu nokusebenza okuhle kakhulu, kepha kuneminye imikhiqizo eminingi neminye imisebenzi eyengeziwe futhi, njenge-PhotoChromic Lens Lens, i-Bluecut eqhubekayo yelensi nokunye, nezinto zokwakha ezahlukahlukene. Ungakutholela okufanele wena ekhasini lethuhttps://www.progresepooptical.com/progreye-lenses-product/.
Iningi labantu liqala ukudinga izibuko ze-multifocal ngesinye isikhathi ngemuva kweminyaka engama-40. Lokhu yilapho ushintsho olujwayelekile lokuguga esweni olubizwa nge-Presbyopia lunciphisa amandla ethu okubona ngokusobala. Kunoma ngubani one-Presbyopia, ama-lens athuthukayo anezinzuzo ezibonakalayo ezibonakalayo nezinobuhlakani uma ziqhathaniswa nama-bifocals wendabuko kanye nama-trucaluals.
Umklamo we-multifocal wama-lens athuthukayo unikeza ngezansi izinzuzo ezibalulekile:
Inikeza umbono ocacile kuwo wonke amabanga (kunokuba okungenani amabanga amabili noma amathathu ahlukile ahlukile).
Kuqeda "ukugxuma kwesithombe" okubangelwa okubangelwa ama-bifocals kanye nama-trifocals. Yilapho izinto zishintsha ngokushesha ekucaciseni nasekucacisweni kwesikhundla lapho amehlo akho edlula emigqeni ebonakalayo kula malensi.
Ngoba ayikho "imigqa ye-biforal" ebonakalayo kuma-lens athuthukile, ikunikeza ukubukeka kobusha ngokwengeziwe kunama-biforals noma ama-trifocals. (Lesi sizathu singesodwa kungaba ngathi kungani abantu abaningi namuhla bagqoka ama-lens athuthukayo kunenombolo abagqoka i-biforal kanye nama-trackals ahlanganisiwe.)