Ama-lens ayinto ebaluleke kakhulu ekwakhiweni kombono futhi aza ngezinhlobo ezahlukahlukene ngokuya ngezidingo ezithile zomthwali. Amalensi amabili asetshenziswa kakhulu ama-lens wombono owodwa namalensi we-biforal. Ngenkathi bobabili besebenza ukulungisa ukungasebenzi kahle okubukwayo, benzelwe izinhloso ezahlukahlukene kanye nabantu. Ukuqonda umehluko phakathi kwalawa ma-lens kubalulekile ekwenzeni isinqumo esinolwazi, ikakhulukazi ukuthi umbono wabantu udinga ukushintshana ngeminyaka nezimfuno zendlela yokuphila. Kulokhu kuhlaziywa okuningiliziwe, sizohlola umehluko phakathiumbono owodwana-amalensi we-bifocal, kufaka phakathi izinhlelo zabo, izinzuzo, nokuthi babhekana kanjani nezinkinga ezithile zombono.
1. Amalensi wokubona owodwa: Yini?
Ama-lens wombono owodwa alula futhi asetshenziswa kakhulu amalensi ezihlokweni ze-eyeglass. Njengoba igama libonisa, la ma-lens aklanyelwe ukuqondisa umbono ngobude obuphelele. Lokhu kusho ukuthi banamandla afanayo okulungiswa kuwo wonke ama-lens, abenze balungele ukubhekana nohlobo oluthile lwephutha lokuphindaphinda - kungaba seduze (i-myopia) noma ingabisi (i-hyperopia).
Izici ezibalulekile:
Amandla afanayo:I-lens inamandla okunikezwa kadokotela kuwo wonke, igxile ekukhanyeni endaweni eyodwa e-retina. Lokhu kuvumela umbono ocacile ebangeni elilodwa.
Ukusebenza okwenziwe lula:Ngoba amalensi wombono owodwa alungile ngohlobo olulodwa lwenkinga yombono, aqondile ekwakhiweni nasekukhiqizweni.
Ye-Myopia (Eseduze):Labo abaseduze banobunzima bokubona izinto ezikude kahle. Ama-lens wombono owodwa wokuvuselela umsebenzi ngokusabalalisa ukukhanya ngaphambi kokuthi kushaye i-retina, kusiza izinto ezikude zivele zibukhali.
Nge-hyperopia (ekufeni):Abantu abanokungaziphathi kahle balwela ukubona izinto eziseduze. Amalensi wombono owodwa we-hyperopia agxila kakhulu ku-retina, ethuthukisa eduze nombono.
Sebenzisa amacala:
Amalensi wombono owodwa nawo angasetshenziselwa abantu abane-astigmatism, isimo lapho ama-cornea angena khona ngokungafanele, okuholela embonweni ohlanekezelwe kuwo wonke amabanga. Amalensi akhethekile wokubona ama-lens abizwa ngokuthi ama-toric lens ayakhelwe ukulungisa ama-atigmatism.
Izinzuzo zamalensi wombono owodwa:
Idizayini elula nokukhiqizwa: Ngoba la ma-lens aklanyelwe ukuqondisa umbono ngebanga elilodwa kuphela, kulula futhi abiza kakhulu ukukhiqiza kunamalensi amaningi.
Uhla olubanzi lwezicelo:Ama-lens wombono owodwa aguquguqukayo futhi alungele abantu bayo yonke iminyaka enohlobo olulodwa lwephutha lokuqapha.
Izindleko eziphansi: Ngokuvamile, ama-lens wombono owodwa angabizi kakhulu kune-bifocal noma amalensi athuthukayo.
Ukuguqulwa okulula:Ngoba yonke lens ifana yunifomu emandleni ayo okulungiswa, abagqoke ama-lens wombono owodwa abazivumelanisa nawo kalula ngaphandle kokuthola ukuhlanekezela noma ukungaphatheki kahle.
Ububanzi bokugxila okulinganiselwe:Amalensi wombono owodwa alungisa kuphela uhlobo olulodwa lwenkinga yombono (eduze noma kude), olungase lunganele kubantu abakhulisa ama-presbybyopia noma ezinye izimo ezihlobene nobudala ezithinta nombono osondelene nokwede.
Izinguquko ezijwayelekile ze-Eyeglass:Kwabanye abadinga ukulungiswa kwazo zombili izindlela zokuba bude kanye nemisebenzi yokusondelana (isib. Ukufunda nokushayela), amalensi wombono owodwa angadinga ukushintshwa phakathi kwamabhangqa ahlukene ezingilazi, okungaphazamisa.
Ukukhawulelwa kwamalensi wombono owodwa:
Ibanga lokugxila eligxile ku-①.Limited Ligxila: Amalensi wombono owodwa kuphela alungisa uhlobo olulodwa lwenkinga yombono (eduze noma kude), olungase lunganele kubantu abakhulisa ama-presbybyopia noma eminye imibandela ehlobene nobudala ethinta nombono osondelene nokwede.
②.frequent eyeglass eshintsha: Kubantu abadinga ukulungiswa kwazo zombili imisebenzi yebanga nemisebenzi esondelene (isib. Ukufunda nokushayela), amalensi wokubona okukodwa angadinga ukushintshana phakathi kwamabili ahlukene wezibuko, okungaphazamisa ukushintshana phakathi kwamabili ama-Glass ezingilazi, okungaphazamisa.
2. Amalensi we-Bifocal: Ayini?
Ama-lens we-biforal aklanyelwe ngqo abantu abadinga ukulungiswa kombono wobude kanye nombono oseduze. Lawa ma-lens ahlukaniswe izigaba ezimbili ezihlukile: ingxenye eyodwa yokubona izinto ezikude ngokusobala, kanti enye ikhona ngokubona izinto eziseduze, njengalapho zifunda. I-BIFOCALS ngokwesiko yadalelwa ukubhekana nama-Presbyopia, isimo lapho iso lilahlekelwa amandla alo okugxila ezintweni eziseduze njengabantu ubudala.
Izici ezibalulekile:
Imiyalelo emibili kwelensi eyodwa:Amalensi we-BIFOCAL anamandla amabili ahlukile wokulungisa elensi eyodwa, imvamisa ehlukaniswe umugqa obonakalayo. Ingxenye ephezulu yelensi isetshenziselwa umbono webanga, ngenkathi ingxenye engezansi isetshenziselwa ukufunda noma eminye imisebenzi eseduze.
Umugqa ohlukanisayo ohlukile:I-BIFOCAL yendabuko inomugqa noma ijika elihlukanisa izindawo ezimbili zombono, okwenza kube lula ukushintsha phakathi kwebanga nokufunda ngokuthumela ngokumane ukuhambisa amehlo phezulu noma phansi.
Ku-Presbyopia:Isizathu esivame kakhulu abantu abagqoka ama-biforal lens ukulungisa ama-Presbyopia. Lesi simo esihlobene nobudala siqala ukuthinta abantu ema-40s abo nama-50s, okwenza kube nzima ngabo ukugxila ezintweni eziseduzane, njengalapho befunda noma befunda i-smartphone noma besebenzisa i-smartphone noma besebenzisa i-smartphone noma besebenzisa i-smartphone.
Ngokulungiswa kombono ngasikhathi sinye:Ama-BIFOCAL alungele abantu abadinga ukushintsha kaningi phakathi kokubuka izinto ezikude (njengokushayela noma ukubuka i-TV) nokwenza imisebenzi esondelene (njengokusebenzisa ikhompyutha). Idizayini emibili-e-One ibavumela ukuba benze lokhu ngaphandle kokushintsha izibuko.
Sebenzisa amacala:
Izinzuzo zamalensi we-bifocal:
Isixazululo esilula sesibili-esisodwa:Ama-BIFOCALS asuse isidingo sokuthwala amabhangqa amaningi ezingilazi. Ngokuhlanganisa ibanga kanye nokulungiswa kombono embonini eyodwa, banikeza ikhambi elisebenzayo kulabo abane-presbyopia noma ezinye izidingo zombono ezigxile ezimalini.
Umsebenzi wokubuka owenziwe ngcono:Kubantu abadinga umbono ocacile ekwakude nasekupheleni, ama-bifocals anikela ngentukuthelo esheshayo ekusebenzeni kwansuku zonke ngaphandle kokuhlupheka kwezibuko ezishintsha njalo.
Ibiza kakhulu ngokuqhathaniswa nokuthuthuka: Ngenkathi ama-lens we-biforal abiza kakhulu kunama-lens wombono owodwa, ngokuvamile abiza kakhulu kunama-lens athuthukile, ahlinzeka ngoguquko olubushelelezi phakathi kwezindawo ezihlukile ezigxile.
Ukuhlukaniswa okubonakalayo: Enye yezici eziphawuleka kakhulu zamalensi we-bifocal umugqa obonakalayo ohlukanisa izindawo ezimbili zombono. Abanye abasebenzisi bathola lokhu kungathandeki kahle, futhi kungakha nomphumela "we-jump" umphumela lapho ushintsha phakathi kwezindawo ezimbili.
Umbono olinganiselwe olinganiselwe:Ngokungafani nama-lens athuthukayo, ama-bifocals anezindawo ezimbili kuphela ezinikezwayo - ibanga futhi eduze. Lokhu kushiya igebe lombono ophakathi nendawo, njengokubuka isikrini sekhompyutha, esingaba yinkinga yemisebenzi ethile.
Isikhathi sokulungiswa:Abanye abasebenzisi bangathatha isikhathi ukujwayela ushintsho olungazelelwe phakathi kwezindawo ezimbili ezigxile, ikakhulukazi lapho ushintsha phakathi kwebanga nangombono eduze.
Ukulinganiselwa kwamalensi we-bifocal:
Ukuhlukaniswa kwe-①.Visible: Enye yezici ezibonakala kakhulu zama-lens we-biforal umugqa obonakalayo ohlukanisa izindawo ezimbili zombono. Abanye abasebenzisi bathola lokhu kungathandeki kahle, futhi kungakha nomphumela "we-jump" umphumela lapho ushintsha phakathi kwezindawo ezimbili.
Umbono ophakathi nendawo: Ngokungafani nama-lens athuthukile, ama-bifocals anezindawo ezimbili ezinikezwa kuphela - ibanga futhi eduze. Lokhu kushiya igebe lombono ophakathi nendawo, njengokubuka isikrini sekhompyutha, esingaba yinkinga yemisebenzi ethile.
Isikhathi esibingelwanga: Abanye abasebenzisi bangathatha isikhathi ukujwayela ushintsho olungazelelwe phakathi kwezindawo ezimbili ezigxile kakhulu, ikakhulukazi lapho ushintsha phakathi kwebanga nangombono njalo.
3. Ukuqhathanisa okuningiliziwe phakathi kombono owodwa namalensi we-biforal
Ukuze uqonde kangcono umehluko osemqoka phakathi kombono owodwa namalensi we-biforal, ake sihlukanise umehluko wabo ngokuya ngemiklamo, ukusebenza, kanye nesipiliyoni somsebenzisi.
4. Kufanele ukhethe nini umbono owodwa noma amalensi we-biforal?
Ukukhetha phakathi kombono owodwa kanye namalensi we-biforal ikakhulukazi kuncike kwizidingo zakho zokubona. Nazi ezinye zezimo lapho uhlobo ngalunye lungaba ukukhetha okungcono:
Ukukhetha ama-lens wombono owodwa:
①.Neasedy noma i-Fleaped Ontly
Abantu abancane: abantu abancane ngokuvamile badinga ukulungiswa kohlobo oluthile lwendaba ethile. Njengoba mancane amathuba okuthola ama-presbybyopia, amalensi wombono owodwa anikeza isixazululo esilula nesingabizi.
Ukukhetha ama-lens we-bifocal:
I-Presbropia ehlobene ne- ①.Age
②.freequent switch phakathi kokude nokude: Kubantu abadinga ukufuduka phakathi kokubheka izinto ezikude nokufunda noma ukwenza imisebenzi esondelene, amalensi asondelene nawo, amalensi we-biforal anikela lula kanye nokusebenza kwelensi eyodwa.
5. Isiphetho
Ngamafuphi, amalensi wombono owodwa namalensi we-biforal aklanyelwe ukufeza izidingo zokulungiswa kombono ezihlukile. Ama-lens wombono owodwa aqondile futhi alungele abantu abancane noma labo abadinga ukulungisa uhlobo oluthile lwendaba yombono, njengokubikwa kweseduze noma ububi. Ngakolunye uhlangothi, amalensi e-biforal, ahambisana nabantu asebekhulile abane-presbyopia abadinga ukulungiswa kubo bobabili abaseduze nakude, bahlinzeka ngesisombululo esikabili esiku-2.
Ukukhetha ama-lens afanele kuyisinyathelo esibalulekile ekuqinisekiseni impilo efanelekile yezempilo nenduduzo yansuku zonke. Ukubonisana ne-Optometrist noma i-Eye Care Professional kunconywa kakhulu ukuthola ukuthi yiluphi uhlobo lwamalensi olufanela kangcono izidingo zakho.
Isikhathi sePosi: Oct-16-2024