Lens ya Spectacle ikosora amakosa yangiritse muguhindura (kwanga) urumuri uko runyuze mumurongo. Ingano yubushobozi bwo kugorora urumuri (lens power) ikenewe kugirango itange icyerekezo cyiza irerekanwa kumyandikire yatanzwe na optique yawe.
Amakosa yangiritse nububasha bwa lens asabwa kubikosora bipimirwa mubice bita dioptres (D). Niba utareba kure, urutonde rwa lens urashobora kuvuga -2.00 D. Niba uri myopic cyane, irashobora kuvuga -8.00 D.
Niba ureba kure, ukeneye "plus" (+) lens, zinini cyane hagati kandi zoroshye kuruhande.
Ibirahuri bisanzwe cyangwa plastike kumurongo mwinshi wo kutareba kure cyangwa kureba kure birashobora kuba binini kandi biremereye.
Kubwamahirwe, abayikoze bakoze ibikoresho bitandukanye bya "high-index" ibikoresho bya lensike bya plastike bihindura urumuri neza.
Ibi bivuze ko ibikoresho bike bishobora gukoreshwa murwego rwohejuru rwo gukosora amakosa angana, bigatuma linzira ya plastike yo murwego rwohejuru yoroheje kandi yoroshye kuruta ibirahuri bisanzwe cyangwa plastike.
Ibyiza byo murwego rwo hejuru
Yoroheje
Kubera ubushobozi bwabo bwo kugorora urumuri neza, indangagaciro-ndende yo kutareba kure ifite impande zoroheje kuruta lens zifite imbaraga zimwe zo kwandikwa zikozwe mubintu bisanzwe bya plastiki.
Umucyo
Impande zoroheje zisaba ibikoresho bike, bigabanya uburemere rusange bwinzira. Lens ikozwe muri plastike yo murwego rwohejuru iroroshye kuruta lens imwe ikozwe muri plastiki isanzwe, kuburyo byoroshye kwambara.
Kandi ibyinshi-byerekana indangagaciro nazo zifite igishushanyo mbonera, kibaha umwirondoro woroheje, ushimishije kandi bikagabanya isura nini yerekana ko lens zisanzwe zitera muburyo bukomeye bwo kureba kure.
Guhitamo indangagaciro ndende
Indangantego ya plastike yo hejuru iraboneka muburyo butandukanye bwo kwanga, mubisanzwe kuva kuri 1.60 kugeza kuri 1.74. Lens ifite indangantego ya 1.60 & 1.67 irashobora kuba byibura 20 ku ijana kurenza linzira isanzwe ya plastike, kandi 1.71 cyangwa irenga mubisanzwe birashobora kuba byoroshye 50%.
Na none, muri rusange, uko urwego ruri hejuru, niko igiciro cyinshi.
Indorerezi yawe yerekana kandi yerekana ubwoko bwibikoresho byo hejuru ushobora kwifuza kuri lens yawe. Ibikoresho byo hejuru cyane bikoreshwa cyane cyane kubisobanuro bikomeye.
Ibyinshi mu byamamare byamamaye muri iki gihe - harimo Dual Aspheric, Iterambere, Bluecut Pro, Prescription yanditswemo, kandi udushya twa Spin-coating fotochromic lens - iraboneka mubikoresho byerekana indangagaciro. Murakaza neza gukanda kurupapuro rwacu kurihttps://www.universeoptical.com/intwaro-yigenga-yerekana/Kuri Kugenzura Ibisobanuro birambuye.