Njengoba sikhula, i-lens, isistimu yokugxila yamehlo ethu, iqala ukuqina kancane kancane futhi ilahlekelwe ukunwebeka kwayo, futhi amandla ayo okulungisa aqala ukuba buthaka kancane kancane, okuholela esimweni esivamile sokuphila: i-presbyopia.Uma indawo eseduze ingaphezu kwamasentimitha angu-30, futhi izinto zingabonakali ngokucacile phakathi kwamasentimitha angu-30, futhi udinga ukusondeza kude ukuze ubone ngokucacile, kufanele ucabange ukugqoka izibuko ze-presbyopic.
Kulokhu sifunda ngezingilazi ze-multifocal eziqhubekayo ku-presbyopia optics.Uma i-presbyopia yenzeka, kuyakhathaza kakhulu ukubona, ngoba iso lomuntu lisesimweni sokukhululeka lapho ubuka kude, futhi ukugxila kakhulu kuyadingeka uma ubheka eduze.Kodwa-ke, amandla okulungisa welensi ye-presbyopic abuthakathaka, futhi ukugxila akuqinile ngokwanele uma ubheka eduze, okuzokwandisa umthwalo emehlweni., izimpawu ezinjengobuhlungu beso, ukungaboni kahle, nekhanda elibuhlungu yizimpawu ezivamile.
Umgomo wamalensi e-multifocal aqhubekayo
Umgomo wokuklama wamalensi ezinto eziningi uwukwakha amaphuzu amaningi aqhubekayo aqhubekayo, amaphakathi kanye naseduze okubukwayo kwilensi eyodwa.Ngokuvamile, ingxenye engaphezulu yelensi ingeyamandla avela kude, ingxenye engezansi ingeyamandla aseduze acwebezelayo, futhi ingxenye emaphakathi yelensi iyindawo ye-gradient edlula kancane kancane amandla acwebezelayo.Isikhungo se-optical esiseduze samalensi amaningi ane-multifocal singu-10-16 mm ngaphansi kwesikhungo esikude se-optical kanye no-2-2.5 mm emakhaleni.Kufanele kuqashelwe ukuthi kunezindawo eziphambuka kuzo zombili izinhlangothi zendawo eqhubekayo.Lapho umugqa wokubuka uhambela kule ndawo, into ebonwayo izoba nokukhubazeka, okwenza kube nzima futhi kungakhululeki ukuyibona.
Indlela yokusebenzisa amalensi e-multifocal aqhubekayo
Amalensi ama-multifocal aqhubekayo kancane kancane andisa amandla ukusuka phezulu kuye phansi, futhi ahlinzeke ngezindawo ezintathu ezifihliwe zamalensi aqhubekayo, amboze ukubona kude, okumaphakathi, naseduze, adlulisa ngokusobala indawo ekude ebangeni elihlukile.Uma ugqoka izibuko ze-multifocal eziqhubekayo okokuqala, inkambu yombono ezinhlangothini zombili zamalensi ingase ihlanekezelwe futhi ihlanekezelwe.Uma indawo yozimele inyakaza noma inyakaziswa, ingase futhi ibangele ukungakhululeki kanye nokungaboni kahle.Landela izinyathelo zokuthi "thula kuqala bese uhamba, kuqala ngaphakathi bese uphumela ngaphandle" ukuze uzijwayeze kancane kancane futhi uzivumelanise nezimo.
01. Indawo yelensi yocingo
Lapho ushayela noma ubheka, gcina isilevu sakho singaphakathi kancane, gcina ikhanda lakho livundlile, futhi ubheke phakathi nendawo yelensi iphakeme kancane.
02. Indawo yelensi yebanga eliphakathi
Lapho ushayela noma ubheka, gcina isilevu sakho singaphakathi kancane, gcina ikhanda lakho livundlile, futhi ubheke phakathi nendawo yelensi iphakeme kancane.Ungakwazi ukuhambisa intamo yakho phezulu naphansi kuze kube yilapho isithombe sesicacile.
03. Indawo yokuvala amalensi
Lapho ufunda incwadi noma iphephandaba, libeke phambi kwakho ngqo, nweba isilevu sakho siye phambili kancane, futhi ulungise amehlo akho abheke phansi aye endaweni yesibuko efanele.
04. Indawo yesibuko esifiphele
Kunezindawo ezinhlangothini zombili zelensi lapho ukukhanya kushintsha khona, futhi umkhakha wokubona uzofiphala.Lokhu kuvamile.
05. Iziphakamiso:
Ukwehla nokwenyuka ngezitebhisi: Yehlisa ikhanda lakho kancane bese ubheka phansi, futhi ulungise ukubona kwakho kusukela endaweni yesibuko eseduze uye endaweni yesibuko yebanga eliphakathi noma elide.
Ukuhamba nsuku zonke: Uma ukuthola kunzima ukugxila, zama ukubheka imitha elilodwa ngaphambili ukuze ulungise ukugxilisa ingqondo.Sicela wehlise ikhanda lakho kancane uma ubheka phezulu eduze.
Ukushayela noma ukusebenzisa imishini: Uma udinga ukubheka kusukela kude kuya eduze, emaceleni noma kuma-engeli amaningi ngenkathi usebenza, sicela ukwenze lokho kuphela ngemva kokuba usuwajwayele ngokuphelele amalensi aqhubekayo.
Isikhathi sokuthumela: Dec-01-2023