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1.56 Ma lens owoneka bwino a HMC
Magalasi a Progressive lens ndi ma lens akutali kwambiri, osiyana ndi magalasi owerengera akale komanso magalasi owerengera amitundu iwiri. Magalasi opita patsogolo sakhala ndi kutopa kwa mboni zamaso zomwe zimafunikira kusintha nthawi zonse utali wokhazikika mukamagwiritsa ntchito utali wa bifocal, ndipo palibe mzere wowonekera pakati pa utali wolunjika uwiriwo. mzere wa malire. Ndiwomasuka kuvala ndipo ali ndi maonekedwe okongola, ndipo pang'onopang'ono wakhala chisankho chabwino kwambiri kwa anthu omwe ali ndi presbyopia.
