Iilensi zeBifocal ziilensi ezikhethekileyo zeglasi eyenzelwe ukuhlangabezana neemfuno zokubonwayo zabantu abanobunzima bokugxila kwizinto ezikufuphi nezikude.Oku kulandelayo ngamanqaku aphambili ekufuneka eqwalaselwe xa kuxoxwa ngokusetyenziswa kweelensi ze-bifocal:
Ulungiso lwePresbyopia:Iilensi ze-Bifocal zisetyenziswa ikakhulu ukulungisa i-presbyopia, impazamo enxulumene neminyaka echaphazela amandla eliso okugxila kwizinto ezikufutshane.Imeko idla ngokubonakala malunga nobudala be-40 kwaye ibangela ubunzima bokufunda, ukusebenzisa izixhobo zedijithali kunye nokwenza eminye imisebenzi esondeleyo.
Ukulungiswa kokubona kabini:Iilensi zeBifocal zinamandla amabini ahlukeneyo okubona kwilensi enye.Inxalenye ephezulu yelensi yenzelwe ngokukodwa ukulungisa umbono womgama, ngelixa inxalenye engezantsi iqulethe i-diopter eyongezelelweyo yombono okufutshane.Lo myalelo ubini uvumela izigulane ze-presbyopic ukuba zibe neepeyi zeglasi ukuhlangabezana neemfuno zabo zombono kwimigama eyahlukeneyo.
Utshintsho olungenamthungo:Uyilo lweelensi ze-bifocal luvumela utshintsho olungenamthungo phakathi kwamacandelo aphezulu nasezantsi e-lens.Olu tshintsho olugudileyo lubalulekile kumava abonakalayo akhululekileyo nasebenzayo xa utshintsha phakathi kwemisebenzi efuna umbono okufutshane kunye nomgama.
Ukulungeleka kunye noKuguquguquka:Iilensi ze-Bifocal zibonelela ngokulula kunye nokuguquguquka kubantu abane-presbyopia ngokubonelela ngesisombululo sombono okufutshane kunye nomgama kwiperi yeglasi enye.Endaweni yokusoloko betshintsha-tshintsha phakathi kweeperile ezininzi zeeglasi, abasebenzisi banokuthembela kwi-bifocals kwimisebenzi eyahlukeneyo kunye nemisebenzi, njengokufunda, ukuqhuba, umsebenzi wekhompyuter, kunye nezinto azithandayo ezibandakanya umbono okufutshane okanye umgama.
Ukusetyenziswa emsebenzini:Iilensi ze-Bifocal zifanelekile ngokubanzi kubantu abamisebenzi yabo okanye imisebenzi yemihla ngemihla efuna utshintsho rhoqo phakathi komgama okufutshane kunye nomgama.Oku kubandakanya imisebenzi efana nababoneleli bezempilo, ootitshala, oomatshini, kunye namagcisa, apho umbono ocacileyo kwimigama eyahlukeneyo ibalulekile ekusebenzeni ngokugqibeleleyo kunye nokhuseleko.
Ukulungiselela iimfuno zomntu ngamnye: Iilensi ze-Bifocal zinokulungiswa ukuhlangabezana neemfuno ezikhethekileyo zomntu ngamnye.Oogqirha bamehlo kunye neengcali zamehlo zivavanya ngononophelo iimfuno zokubonwayo zesigulana kunye nendlela yokuphila ukumisela eyona uyilo lufanelekileyo lwelensi ye-bifocal, ukuqinisekisa ukuba ummiselo uyahlangabezana neemfuno zomsebenzi wabo kunye nemisebenzi yolonwabo.
Kancinci ukuziqhelanisa ne:Kubantu abatsha abanxiba iilensi ze-bifocal, kukho ixesha lohlengahlengiso ukuze amehlo alungelelanise iilensi ze-bifocal.Izigulana ekuqaleni zinokuba nemiceli mngeni yokulungelelanisa iindawo ekugxilwe kuzo ezahlukeneyo ngaphakathi kwelensi, kodwa ngokuhamba kwexesha kunye nokuziqhelanisa, uninzi lwabantu luziqhelanisa kakuhle kwaye lonwabele izibonelelo zokuphucula umbono okufutshane kunye nomgama.
Ukuqukumbela, iilensi ze-bifocal zibalulekile ukujongana nemingeni yombono eyodwa eboniswa yi-presbyopia.Uyilo lwabo olubhalwe kabini, utshintsho olungenamthungo, lula, ukuguquguquka, kunye nokubanakho ukwenza ngokwezifiso kubenza babe sisisombululo esifanelekileyo kubantu abafuna umbono ocacileyo notofotofo kumgama owahluka-hlukeneyo kubomi babo bemihla ngemihla.
Ngubani ofuna ukunxiba i-bifocals?
Iiglasi ze-Bifocal zidla ngokumiselwa kubantu abane-presbyopia, imeko enxulumene neminyaka echaphazela ukukwazi kwamehlo ukugxila kwizinto ezikufutshane ngenxa yokulahlekelwa kwendalo ku-elasticity kwi-lens yeso.I-Presbyopia idla ngokubonakala kubantu abangaphezu kweminyaka engama-40, kubangela ubunzima bokufunda, ukusebenzisa izixhobo zedijithali, kunye nokwenza eminye imisebenzi ekufutshane.Ukongeza kwi-presbyopia enxulumene neminyaka, iiglasi ze-bifocal zinokucetyiswa kubantu abajongene nomgama kunye nemingeni ekufutshane yombono ngenxa yezinye iimpazamo eziphazamisayo ezifana nokubona kude okanye i-myopia.Ke ngoko, iiglasi ze-bifocal zibonelela ngesisombululo esifanelekileyo kubantu abafuna amandla ahlukeneyo okubona ukuhlangabezana neemfuno zabo zombono kumgama ohlukeneyo.
Kufuneka unxibe nini i-bifocals?
Iiglasi ze-Bifocal zihlala zinconywa kubantu abanobunzima bokubona izinto ezisondeleyo ngenxa ye-presbyopia, inkqubo yokuguga yendalo echaphazela ukukwazi kwamehlo ukugxila kwizinto ezikufutshane.Imeko idla ngokuvela malunga nobudala be-40 kwaye iba mandundu ngokuhamba kwexesha.I-Presbyopia inokubangela iimpawu ezifana noxinzelelo lwamehlo, iintloko ezibuhlungu, ukungaboni kakuhle kunye nobunzima bokufunda umbhalo omncinci.Iiglasi ze-Bifocal zinokuba luncedo kubantu abanezinye iimpazamo zokujonga ubuso, njengokujonga kufutshane okanye ukubona kude, kwaye abafuna amandla ohlukileyo anokukhanyela ukubona kufutshane kunye nomgama.Ukuba ufumanisa ukuba uhlala umgama kwizinto zokufunda, ukuva ubunzima bamehlo xa ufunda okanye usebenzisa izixhobo zedijithali, okanye ufuna ukususa iiglasi zakho ukuze ubone izinto ezikufutshane, kusenokuba lixesha lokuqwalasela i-bifocals.Ukongeza, ukuba sele unxibe iiglasi zokubona umgama kodwa uzifumane unobunzima kwimisebenzi ekufutshane, i-bifocals inokubonelela ngesisombululo esifanelekileyo.Ekugqibeleni, ukuba unenkathazo ngombono okufutshane okanye ukufumanisa kunzima ukutshintsha phakathi kwezibini ezininzi zeeglasi kwimisebenzi eyahlukeneyo, ukuxoxa nge-bifocals kunye nochwephesha wokunakekelwa kwamehlo kunokunceda ukugqiba ukuba ngaba lukhetho olufanelekileyo kwiimfuno zakho zombono.
Uthini umahluko phakathi kwee-bifocals kunye neelensi eziqhelekileyo?
Ii-bifocals kunye neelensi eziqhelekileyo zombini zintlobo zeelensi zeglasi ezisebenzisa iinjongo ezahlukeneyo kwaye zihlangabezana neemfuno ezahlukeneyo zombono.Ukuqonda umahluko phakathi kwezi ntlobo zimbini zeelensi kunokunceda abantu benze izigqibo ezizizo malunga nokhetho lokulungisa umbono.
Iilensi eziqhelekileyo: Iilensi eziqhelekileyo, ezikwabizwa ngokuba zii-single vision lens, ziyilelwe ukulungisa impazamo ethile ebonisa ukukhenkceza, njengokubona kufutshane, ukubona kude, okanye i-astigmatism.Ezi lensi zinamandla achaziweyo angaguqukiyo kuwo wonke umphezulu wazo kwaye ngokwesiqhelo ziyilelwe ukunika umbono ocacileyo kumgama omnye, nokuba ukufutshane, uphakathi, okanye umgama wokubonwa.Abantu ababona kufutshane banokungenelwa kwiilensi ezichazwe ngugqirha ezibenza bakwazi ukubona izinto ezikude ngokucacileyo, ngoxa abantu ababona kude basenokufuna iilensi ukuze baphucule ukubona kwabo kufutshane.Ukongezelela, abantu abane-astigmatism badinga iilensi ukuhlawulela ukugoba okungaqhelekanga kwe-cornea okanye lens yamehlo, okubavumela ukuba bagxininise ukukhanya ngokuchanekileyo kwi-retina.
Iilensi zeBifocal: Iilensi zeBifocal zizodwa kuba ziqulathe amandla amabini ahlukeneyo okubona ngaphakathi kwelensi enye.Iilensi zenzelwe ukujongana ne-presbyopia, imeko enxulumene neminyaka echaphazela ukukwazi kwamehlo ukugxila kwizinto ezikufutshane.Njengoko sikhula, ilensi yendalo yeliso iba bhetyebhetye, nto leyo eyenza kube nzima ukugxila kwimisebenzi ekufutshane enjengokufunda, ukusebenzisa i-smartphone, okanye ukwenza umsebenzi oneenkcukacha.Uyilo lweelensi ze-bifocal lubandakanya umgca obonakalayo owahlula iindawo eziphezulu kunye nezantsi zelensi.Inxalenye engaphezulu yelensi iqhele ukusetyenziselwa ukubona umgama, ngelixa indawo esezantsi iqulethe amandla ahlukeneyo okuhlaziya umbono okufutshane.Olu yilo lunamandla-mbini luvumela abanxibi ukuba babone ngokucacileyo kwimigama eyahlukeneyo ngaphandle kokutshintsha phakathi kweeperisi ezininzi zeeglasi.Iilensi zeBifocal zibonelela ngesisombululo esifanelekileyo nesiguquguqukayo kubantu abafuna ukulungiswa kombono kuyo yomibini imisebenzi ekufutshane kunye nekude.
Umahluko ophambili: Umahluko omkhulu phakathi kweelensi ze-bifocal kunye neelensi eziqhelekileyo kuyilo kunye nokusetyenziswa okujoliswe kuko.Iilensi eziqhelekileyo zijongana neempazamo ezithile ze-refractive kwaye zibonelela ngombono ocacileyo kumgama omnye, ngelixa iilensi ze-bifocal ziyilelwe ngokukodwa ukwamkela i-presbyopia kunye nokubonelela ngolungiso lwe-biphoto kumbono okufutshane kunye nomgama.Iilensi eziqhelekileyo zisetyenziselwa ukulungisa ukubona kufutshane, ukubona kude, kunye ne-astigmatism, ngelixa iilensi ze-bifocal zibonelela ngombono ocacileyo kumgama omninzi ngokudibanisa amandla amabini achazwe ngugqirha kwilensi enye.Isishwankathelo, iilensi eziqhelekileyo zijongana nempazamo ethile ye-refractive kwaye zibonelela ngokulungiswa kombono omnye, ngelixa iilensi ze-bifocal zenzelwe ukujongana ne-presbyopia kunye nokubonelela ngesisombululo se-bifocal kumbono okufutshane kunye nomgama.Ukuqonda umahluko phakathi kwezi ntlobo zimbini zeelensi kunokunceda abantu bakhethe eyona ndlela ifanelekileyo yokulungisa umbono ngokusekwe kwiimfuno zabo kunye nezinto abazithandayo.
Ixesha lokuposa: Feb-04-2024