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1.56 Bifocal Flat top / Round Top / Blended HMC optical lens
Magalasi a Bifocal ndi magalasi owonera omwe ali ndi malo owongolera ndipo amagwiritsidwa ntchito makamaka pokonza presbyopia. Malo omwe magalasi a bifocal amawongolera masomphenya akutali amatchedwa dera la masomphenya akutali, ndipo malo omwe amawongolera masomphenya apafupi amatchedwa dera la masomphenya apafupi ndi malo owerengera. Nthawi zambiri, malo akutali ndi akulu, motero amatchedwanso gawo lalikulu, ndipo malo apafupi ndi ang'onoang'ono, otchedwa sub slice.
