Iilensi zeSpectacle zilungisa iimpazamo zokujika ngokugoba (ukujika) ukukhanya njengoko kudlula kwilensi. Ubungakanani bokukwazi ukujika ukukhanya (amandla elensi) obufunekayo ukuze ubone kakuhle buboniswe kumyalelo wespectrum onikwe yingcali yakho yamehlo.
Iimpazamo zokuhombisa kunye namandla eelensi afunekayo ukuzilungisa zilinganiswa ngeeyunithi ezibizwa ngokuba yi-dioptres (D). Ukuba awunambono imfutshane kancinci, ummiselo weelensi yakho ungathi -2.00 D. Ukuba une-myopia kakhulu, ungathi -8.00 D.
Ukuba ungumntu obona izinto ezikude, udinga iilensi "ezinobukhulu" (+), ezityebileyo embindini kwaye ezinciphileyo emaphethelweni.
Iilensi zeglasi okanye zeplastiki eziqhelekileyo kubantu abangaboni kakuhle okanye ababona ixesha elide zinokuba nkulu kwaye zinzima.
Ngethamsanqa, abavelisi benze uluhlu lwezixhobo ezintsha zeplastiki "ezine-high-index" ezigoba ukukhanya ngokufanelekileyo.
Oku kuthetha ukuba kungasetyenziswa izinto ezincinci kwilensi ene-index ephezulu ukulungisa inani elifanayo lempazamo yokukhanyela, nto leyo eyenza iilensi zeplastiki ezine-index ephezulu zibe zincinci kwaye zikhaphukhaphu kuneelensi zeglasi okanye zeplastiki eziqhelekileyo.
Iingenelo zeelensi ezine-index ephezulu
Umncinci
Ngenxa yokukwazi kwazo ukugoba ukukhanya ngokufanelekileyo, iilensi ezine-high-index zokubona okukufutshane zinemiphetho emincinci kuneelensi ezinamandla afanayo nalawo enziwe ngeplastiki eqhelekileyo.
Ikhaphukhaphu
Imiphetho emincinci ifuna izinto ezincinci zelensi, nto leyo enciphisa ubunzima beelensi iyonke. Iilensi ezenziwe ngeplastiki ephezulu zikhaphukhaphu kuneelensi ezifanayo ezenziwe ngeplastiki eqhelekileyo, ngoko ke kulula ukuzinxiba.
Kwaye uninzi lweelensi ezine-high-index nazo zinoyilo olufana ne-aspheric, oluzinika iprofayili encinci, enomtsalane ngakumbi kwaye lunciphisa inkangeleko enkulu ebangelwa ziilensi zesiqhelo kwimiyalelo eqinileyo yokujonga ixesha elide.
Ukukhetha iilensi ezinee-index eziphezulu
Iilensi zeplastiki ezine-high-index ngoku ziyafumaneka kwiindidi ezahlukeneyo ze-refractive indices, eziqhele ukuba phakathi kwe-1.60 ukuya kwi-1.74. Iilensi ezine-refractive index ye-1.60 kunye ne-1.67 zinokuba ncinci nge-20% ubuncinane kuneelensi zeplastiki eziqhelekileyo, kwaye i-1.71 okanye ngaphezulu iqhele ukuba ncinci nge-50%.
Kwakhona, ngokubanzi, okukhona isalathisi siphezulu, kokukhona ixabiso leelensi liphezulu.
Iresiphi yakho ye-spectacle ikwamisela ukuba loluphi uhlobo lwezixhobo ezine-index ephezulu onokuzifuna kwilensi yakho. Izixhobo ezine-index ephezulu zisetyenziselwa ikakhulu iiresiphi ezinamandla.
Uninzi lweziyilo kunye neempawu zeelensi ezidumileyo zanamhlanje — kuquka iDual Aspheric, iProgressive, iBluecut Pro, iPrescription tinted, kunye nelensi ze-photochromic ezisebenzisa iSpin-coating ezintsha — ziyafumaneka kwizixhobo eziphezulu. Wamkelekile ukuba ucofe kumaphepha ethu kuhttps://www.universeoptical.com/armor-revolution-product/ukujonga iinkcukacha ezithe vetshe.