Magalasi opita patsogolo ndi ma lens enieni a "multifocal" omwe amapereka kuchuluka kwamphamvu kwa magalasi mu magalasi amodzi. Optimum-vision imayendetsa kutalika kwa lens kuti mtunda uliwonse ukhale womveka bwino:
Pamwamba pa mandala: abwino pakuwona mtunda, kuyendetsa galimoto, kuyenda.
Pakati pa mandala: abwino kwa masomphenya apakompyuta, mtunda wapakatikati.
Pansi pa disolo: yabwino kuwerenga kapena kumaliza zina zapafupi.
Pamene tikukalamba, zimakhala zovuta kuyang'ana zinthu zomwe zili pafupi ndi maso athu. Ichi ndi matenda ofala kwambiri otchedwa presbyopia. Anthu ambiri amazindikira koyamba akamavutika kuwerenga zolemba zabwino, kapena akamamva kupweteka mutu pambuyo powerenga, chifukwa cha vuto la maso.
Progressives cholinga kwa anthu amene amafunikira kudzudzulidwa kwa presbyopia, koma safuna mzere wolimba pakati magalasi awo.
Ndi magalasi opita patsogolo, simudzafunika kukhala ndi magalasi oposa limodzi. Simufunikanso kusinthana pakati pa kuwerenga kwanu ndi magalasi okhazikika.
Masomphenya ndi opita patsogolo amatha kuwoneka mwachilengedwe. Ngati mutasiya kuyang'ana chinachake pafupi ndi chinachake chakutali, simungadumphe monga momwe mungachitire ndi bifocals kapena trifocals.
Zimatenga masabata 1-2 kuti zigwirizane ndi zomwe zikuchitika. Muyenera kudziphunzitsa kuyang'ana m'munsi mwa disolo pamene mukuwerenga, kuyang'ana kutsogolo kutsogolo kwa mtunda, ndi kuyang'ana penapake pakati pa madontho awiri apakati kapena ntchito ya kompyuta.
Munthawi yophunzira, mutha kumva chizungulire komanso nseru chifukwa choyang'ana mbali yolakwika ya mandala. Pakhoza kukhalanso kupotozedwa kwa masomphenya anu otumphukira.
Monga magetsi a buluu masiku ano ali paliponse, Anti-blue Progressive Lens ndi abwino kwa zochitika zapakhomo, monga kuonera TV, kusewera pa kompyuta, kuwerenga mabuku ndi kuwerenga manyuzipepala, komanso oyenera kuyenda panja, kuyendetsa galimoto, kuyenda ndi kuvala tsiku ndi tsiku chaka chonse.