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1.56 Bifocal Flat top / Round Top / Blended HMC Optical lens
Magalasi a Bifocals ndi magalasi owoneka bwino omwe amakhala ndi madera onse owongolera ndipo amagwiritsidwa ntchito makamaka pokonza presbyopia. Malo omwe ma bifocals amawongolera masomphenya akutali amatchedwa kutali vision area, ndipo malo omwe amawongolera pafupi ndi masomphenya amatchedwa pafupi ndi masomphenya ndi malo owerengera. Nthawi zambiri, malo akutali ndi okulirapo, motero amatchedwanso gawo lalikulu, ndipo malo apafupi ndi ang'onoang'ono, otchedwa sub slice.
