yintoni ilensi eqhubekayo?
Iilensi eziqhubela phambili luhlobo lweelensi zeglasi ezibonelela ngokuqhubekeka okugudileyo nokungenamthungo kwamagunya amaninzi okulungisa umbono ngaphakathi kwilensi enye.Zikwabizwa ngokuba yi-no-line bifocals okanye iilensi ze-varifocal.
Ngokungafaniyo neelensi zesiqhelo ze-bifocal ezinomgca obonakalayo owahlula umgama kunye neendawo ezikufutshane zokulungiswa kombono, iilensi eziqhubela phambili zinenguqu encinci phakathi kwemimandla yamandla eyahlukeneyo.Lo mmandla wenguqu uvumela abanxibi ukuba babone ngokucacileyo kuyo yonke imigama ngaphandle kokutshintsha ngokukhawuleza ukulungiswa okubonakalayo.
Iilensi eziqhubela phambili zinokulungiswa ukuze zihlangabezane neemfuno ezithile zomntu ngamnye.Uyilo luthathela ingqalelo umgama phakathi kwamehlo, i-angle yesakhelo, kunye neemfuno ezimiselweyo zomntu onxibayo.Iilensi zenziwe kusetyenziswa iteknoloji yekhompyutha ukuqinisekisa ukuchaneka nokuchaneka kwimimandla eqhubekayo.
Nangona kunjalo, kungathatha ixesha ukuziqhelanisa neelensi eziqhubekayo ngenxa yamandla ahlukeneyo okulungisa, kwaye abanye abantu banokufumana ukugqwetheka okanye ukufiphala kweperipheral de baziqhelanise nazo.Ukongeza, iilensi eziqhubela phambili zinokubiza ngaphezulu kunee-bifocal eziqhelekileyo okanye iilensi zombono omnye.
Inzuzo yelensi eqhubekayo
Inzuzo ephambili yeelensi eziqhubekayo kukuba zibonelela ngesisombululo esingenamthungo kunye nendalo yokulungiswa kombono kubantu abane-presbyopia (imeko apho ukukwazi kwamehlo ukugxila kwizinto ezikufutshane kuncipha ngokuthe ngcembe ngokukhula).
Nazi ezinye iingenelo zeelensi eziqhubekayo:
Umbono ocacileyo kuyo yonke imigama: Iilensi eziqhubela phambili zibonelela ngotshintsho olugudileyo nolungenasiphazamiso phakathi komgama, ophakathi, kunye nombono okufutshane.Oku kuthetha ukuba abanxibi akufuneki batshintshe phakathi kweeperi ezininzi zeeglasi, ezinokuthi ziphazamise kwaye zingenzeki.
Akukho mgca ubonakalayo: Ngokungafaniyo neelensi ze-bifocal eziqhelekileyo, iilensi eziqhubekayo azinawo umgca obonakalayo owahlula amandla ahlukeneyo okulungisa.Oku kubenza bathandeke ngakumbi kwaye kuphelisa ibala eliye linxulunyaniswa neeglasi ezimbini.
Ukwenziwa ngokwezifiso: Iilensi eziqhubela phambili zinokulungiswa ukuze zilungele iimfuno zomntu ozinxibileyo.Uyilo lunokulungelelaniswa kwisitayela sesakhelo kunye nobukhulu, kwaye ummiselo unokulungiswa kwiimfuno ezibonakalayo zomntu.
Ukuphuculwa kombono weperipheral: Iilensi eziqhubela phambili zibonelela ngommandla obanzi wokujonga kuneelensi zesiqhelo zebifocal, ezinokunceda kwimisebenzi efana nokuqhuba kunye nemidlalo.
Ngokubanzi, iilensi eziqhubela phambili zikhethwa ngabantu abafuna ukulungiswa kombono we-multifocal kuba babonelela ngokucacileyo, umbono wendalo kuyo yonke imigama kunye nokuphelisa imfuno yeeglasi ezininzi zeeglasi.
Ngabantu abanjani na iilensi eziqhubekayo ezifanelekileyo
Iilensi eziqhubekayo zifanelekile kubantu abane-presbyopia, imeko eqhelekileyo yobudala eyenza kube nzima ukugxila kwizinto ezikufutshane.I-Presbyopia ngokuqhelekileyo ikhula kubantu abangaphezu kweminyaka engama-40 kwaye ibangelwa ukuqina kancinci kwelensi yeso.
Iilensi eziqhubekayo zikwafanelekile kubantu abafuna ukulungiswa kokubini kunye nombono okufutshane, njengoko zibonelela ngenguqu engenamthungo phakathi kwamagunya ahlukeneyo e-lens.Oku kubenza babe lukhetho oluhle kubantu abanoluhlu lweemfuno zombono, njengabo basebenza kwiikhompyuter ixesha elide kwaye kufuneka babone izinto ezikude.
Kubalulekile ukuqaphela ukuba iilensi eziqhubekayo zisenokungafanelanga wonke umntu, ngakumbi abo banemeko ezithile zamehlo okanye iziphene zokubona.Kubalulekile ukubonisana nengcali yokhathalelo lwamehlo ukugqiba ukuba ingaba iilensi eziqhubekayo ziyindlela efanelekileyo kwiimfuno zakho ezithile.
Ixesha lokuposa: Feb-22-2023