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1.56 Semi Finished Blue Cut Porgressive Optical lens
Magalasi a Multifocal ali ndi njira zazifupi komanso njira zazitali. Kusankha njira ndikofunikira. Kawirikawiri, choyamba timaganizira kusankha njira yaying'ono, chifukwa njira yaying'ono idzakhala ndi gawo lalikulu, lomwe likugwirizana ndi moyo wa anthu omwe nthawi zambiri amayang'ana mafoni awo. Kusiyanitsa pakati pa maso ndi kwakukulu, maso otsika kasinthasintha mphamvu ya anthu, ndi oyeneranso njira zazifupi. Ngati wogula akuvala ma multifocus kwa nthawi yoyamba, ali ndi zofuna zapakatikati, ndipo Zowonjezera ndizokwera kwambiri, ndiye kuti njira yayitali ikhoza kuganiziridwa.
