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  • 1.59 PC Bifocal Invisible Photochromic Gray HMC Optical lens

    1.59 PC Bifocal Invisible Photochromic Gray HMC Optical lens

    I kēia manawa, ʻelua ʻano mea lens ma ka mākeke, hoʻokahi mea aniani, ʻo kekahi mea resin. Hoʻokaʻawale ʻia nā mea resin i CR-39 a me polycarbonate (mea PC).

    ʻO nā lens bifocal a i ʻole nā ​​lens bifocal nā lens i loaʻa ʻelua mau wahi hoʻoponopono i ka manawa like a hoʻohana nui ʻia e hoʻoponopono i ka presbyopia. ʻO ka ʻāpana mamao i hoʻoponopono ʻia e ka lens bifocal ua kapa ʻia ka ʻāpana mamao, a ʻo ka wahi kokoke i kapa ʻia ʻo ka wahi kokoke a me ka wahi heluhelu. ʻO ka mea maʻamau, nui ka ʻāina mamao, no laila ua kapa ʻia ʻo ia ke kiʻi nui, a liʻiliʻi ka ʻāina proximal, no laila ua kapa ʻia ʻo ia ka sub-film.

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