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1.59 PC Bifocal Invisible Photochromic Grey HMC anya anya m
Ka ọ dị ugbu a, enwere ụdị ihe oghere abụọ dị n'ahịa, otu bụ ihe iko, nke ọzọ bụ ihe resin. A na-ekewa ihe resin na CR-39 na polycarbonate (ihe PC).
lenses bifocal ma ọ bụ lenses bifocal bụ lenses nwere mpaghara mgbazi abụọ n'otu oge ma na-ejikarị emezi presbyopia. A na-akpọ ebe dị anya nke lens bifocal na-edozi ebe dị anya, ebe dị nso na-akpọ ebe dị nso na ebe ịgụ akwụkwọ. Ọtụtụ mgbe, mpaghara distal buru ibu, ya mere a na-akpọkwa ya isi ihe nkiri, na mpaghara dị nso dị ntakịrị, ya mere a na-akpọ ya sub-film.
