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1.56 Ruwan tabarau na gani mai launin toka mai launin ruwan kasa mai siffar Bifocal
Gilashin bifocal sun fi dacewa da tsofaffi su yi amfani da su, kuma suna iya samun gani na kusa da na nesa. Idan mutane suka tsufa, ganinsu zai ragu kuma idanunsu za su yi tsufa. Kuma gilashin bifocal na iya taimaka wa tsofaffi su gani nesa da kusa.
Ruwan tabarau biyu ana kuma kiransa ruwan tabarau na bifocal, wanda galibi ya ƙunshi ruwan tabarau mai faɗi, ruwan tabarau mai zagaye da ruwan tabarau mara ganuwa.
Ana buƙatar ruwan tabarau na gilashin bifocal su haɗa da hyperopia diopter, myopia diopter ko downlight. Nisa mai nisa na pupillary, kusa da pupillary distance.
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1.56 Ruwan tabarau na gani mai faɗi Bifocal Top Photochromic Grey HMC
Tare da buƙatun rayuwar zamani, rawar da gilashin ke takawa wajen canza launi ba wai kawai don kare idanu ba ne, har ma aikin fasaha ne. Gilashin tabarau masu inganci masu canza launi, tare da tufafi masu dacewa, na iya lalata yanayin mutum na musamman. Gilashin tabarau masu canza launi na iya canzawa gwargwadon ƙarfin hasken ultraviolet kuma su canza launinsa, ruwan tabarau na asali mai haske mara launi, wanda ke fuskantar hasken haske mai ƙarfi, zai zama ruwan tabarau masu launi, don yin kariya, don haka ya dace da amfani a cikin gida da waje a lokaci guda.
