Iilensi ze-bifocal ezingabonakaliyo ziilensi ze-eyewear ezikumgangatho ophezulu ezinokuthi ngaxeshanye zilungise zombini i-hyperopia kunye ne-myopia.Uyilo lwalolu hlobo lwelensi aluthathi kuphela iingxaki ezinokuthi zilungiswe iiglasi eziqhelekileyo, kodwa ziqwalasela iingxaki ezibonakalayo ezikhoyo kumaqela akhethekileyo.Kweli nqaku, siza kubonelela ngentshayelelo eneenkcukacha kwimisebenzi kunye nezibonelelo zeelensi ze-bifocal ezingaphathekiyo.
Iimpawu: Kukho iindawo ezimbini ekugxilwe kuzo kwiperi enye yeelensi, oko kukuthi, kwilensi enye eqhelekileyo
Yaleka ilensi encinci enokukhanya okwahlukileyo kwilensi:
Isetyenziselwa enye indawo kwizigulana ezine-presbyopia ukubona kude nokuvala:
Ngaphezulu ngumgama wokujonga (ngamanye amaxesha ukukhanya okucaba), kwaye ngaphantsi ngumgama wokujonga
Ixesha lokufunda:
Iqondo elikude libizwa ngokuba kukukhanya okuphezulu, kwaye iqondo elikufutshane libizwa ngokuba sisibane esisezantsi
Umahluko osezantsi wokukhanya yi-ADD (ukukhanya kwangaphandle);
Ukwahlulwe kumgca wokukhanya okuphindwe kabini, ukukhanya okuthe tyaba okuphindwe kabini, kunye nesetyhula ngokwemilo yeqhekeza elincinci
Ukukhanya okuphindwe kabini okuphezulu, njl.
Izinto eziluncedo: Oku kuphelisa isidingo sokuba izigulane ezine-presbyopia zitshintshe iiglasi zazo xa zijonge kufutshane nangaphezulu.
Ukungalungi: Kukho into yokutsiba xa utshintsha phakathi kokujonga kude kwaye ujonge kufutshane;
Kukho umahluko omkhulu kwimbonakalo kwiilensi eziqhelekileyo.
Ngokwendlela yokukhanya okusezantsi kwelensi ye-bifocal, inokwahlulwa ibe:Umphezulu oMcaba,Round Top kunyeAyibonakali.
Xa kuthelekiswa ne-Flat-Top kunye ne-Round-Top, i-Lens engabonakaliyo inenzuzo yokungakwazi ukwahlula ngokucacileyo umda phakathi kwe-myopia kunye ne-presbyopia ukusuka kwimbonakalo, kwaye ifana kakhulu ne-lens ye-lens eqhelekileyo.Xa ujonga izinto, akukho luvo lucacileyo lokuthintela, ukwenza ukunxiba kukhululeke ngakumbi.
Le yilensi yethu engabonakaliyo yefotogrey, enokuthi ibe nokukhanya okuluhlaza kunye nokutshintsha umbala.
Ngaba akukho mda ocacileyo, akunjalo?
Emva kokukhanyiswa kukukhanya okutshintsha umbala, kubonakala kungwevu.
Ukuba unomdla kule mveliso, nceda uqhagamshelane nathi.Khetha iilensi ezingabonakaliyo ukukuzisela amava entuthuzelo engalindelekanga.!
Ixesha lokuposa: Nov-17-2023