ILens yoMbono omnye VS.I-Bifocal VS.Uqhubela phambili
iilensi zombono omnye zibonelela ngolungiso olulodwa lwamehlo.Oku kuthetha ukuba basasaza ugxininiso ngokulinganayo phezu kwe-lens yonke, endaweni yokwahlula ugxininiso phakathi kwesiqingatha esiphezulu nesisezantsi, njengoko kunjalo nge-bifocals.Iiglasi zombono omnye lolona hlobo luxhaphakileyo lomyalelo, kwaye zinokulungisa nokuba ukubona kufutshane (myopia) okanye ukubona kude (hyperopia).Ukuba ugqirha wakho akakhange achaze umyalelo okhethekileyo ngakumbi, amathuba okuba uya kufuna iiglasi zombono omnye.Kukho izizathu ezininzi zokuba unokufuna umyalelo wombono omnye.Abanye abathengi basebenzisa iilensi zombono omnye kwiiglasi zabo zokufunda, ezivumela umfanekiso ococekileyo nocacileyo kufutshane.Abanye bayazuza ngokucaca okukhulu kumgama, umzekelo, xa besebenzisa iiglasi zombono omnye xa uqhuba.
I-Bifocals inceda abo bafuna ukulungiswa kombono kwi-myopia (ukubona okufutshane) kunye ne-presbyopia (ukubona ixesha elide).Iilensi zivumela umbono ocacileyo kuwo nawuphi umgama phakathi kwepere enye yeemboniselo.
Zinokucingwa njengeelensi zemigqaliselo eqhelekileyo enecandelo elongezelelweyo lokufunda.Icandelo lokufunda lidla ngokubekwa kwindawo esezantsi yelensi
D Seg Bifocals
Indawo yokufunda ye-D Seg Bifocal ibonakala njengonobumba D obekwe kwicala layo.Basenokubhekiswa njengeFlat Top Bifocal.I-D Seg lolona yilo lulula lwe-Bifocal kumntu onxibileyo ukuba aqhelane nalo.Ngenxa yoku, lolona hlobo ludumileyo kwimarike namhlanje.
Icandelo lokufunda lifumaneka kwiindidi ezahlukeneyo.Iilensi ezisetyenziswa kakhulu yi-D 28 kunye ne-D 35. Icandelo le-D 28 liyi-28mm ububanzi kunye ne-D 35 yi-35mm ububanzi.
D Seg Bifocals
Indawo yokufunda ye-D Seg Bifocal ibonakala njengonobumba D obekwe kwicala layo.Basenokubhekiswa njengeFlat Top Bifocal.I-D Seg lolona yilo lulula lwe-Bifocal kumntu onxibileyo ukuba aqhelane nalo.Ngenxa yoku, lolona hlobo ludumileyo kwimarike namhlanje.
Icandelo lokufunda lifumaneka kwiindidi ezahlukeneyo.Iilensi ezisetyenziswa kakhulu yi-D 28 kunye ne-D 35. Icandelo le-D 28 liyi-28mm ububanzi kunye ne-D 35 yi-35mm ububanzi.
I-bifocals edibeneyo
Nangona uninzi lwee-bifocals zinemigca ebonakalayo kumda wecandelo le-lens, kukho i-bifocal engqukuva engqukuva enecandelo elikufutshane eliphawuleka kancinci kunomzala wayo oqhelekileyo.
I-seg ekufutshane idityaniswe kumgama we-lens ukwenzela ukuba ingabonakali.
Ngaphandle kwemigca ebonakalayo, i-seg bifocal ejikelezileyo edibeneyo inika imbonakalo yolutsha ngakumbi kune-bifocals enemigca.
Iilensi eziqhubekayo zinemimiselo emithathu kwipere enye yeeglasi.Oko kukuvumela ukuba wenze umsebenzi osondeleyo (njengokufunda incwadi), umsebenzi ophakathi (njengokukhangela iwebhusayithi kwikhompyutheni), okanye ukujonga umgama (njengokuqhuba) ngaphandle kokufuna ukutshintsha iiglasi zakho.Ngamanye amaxesha zibizwa ngokuba ziilensi ezininzi.
Iilensi eziqhubela phambili luhlaziyo kwiilensi ze-bifocal kunye ne-trifocal.Zombini ezi ntlobo zeglasi zemveli zinemigca exelayo kwiilensi.IiProgressives zinenkangeleko engenamthungo.Ngamanye amaxesha zibizwa ngokuba yi "no-line bifocals," kodwa oko akulunganga.Kuya kuchaneka ngakumbi ukubiza iilensi eziqhubekayo "i-no-line trifocals."
Ngeelensi eziqhubelekayo, akusayi kufuneka ube neeglasi ezingaphezulu kwesinye.Awudingi ukutshintshana phakathi kokufunda kwakho kunye neeglasi eziqhelekileyo.
Umbono onenkqubela-phambili unokubonakala ungokwemvelo.Ukuba uyatshintsha ekujongeni into ekufutshane nento ekude, awuyi kufumana "tsiba" njengoko ubuya kwenza nge-bifocals okanye i-trifocals.Ngoko ukuba uqhuba, unokujonga kwideshibhodi yakho, endleleni, okanye uphawu olumgama oluhamba kakuhle.
Ixesha lokuposa: Apr-08-2022