Pali zinanthano zofalaza kuwerenga magalasi.
Chimodzi mwa nthano zofala kwambiri: Kuvala magalasi owerengera kungapangitse maso anu kufooka. Si zoona zimenezo.
Nthano ina: Kuchitidwa opaleshoni ya cataract kudzakonza maso anu, zomwe zikutanthauza kuti mutha kutaya magalasi anu owerengera. Izi sizowonanso. Mutha kukhala ndi mavuto ena a maso omwe sangakonzedwe ndi magalasi owerengera.
Ndipo pali lingaliro lakuti kuwerenga magalasi kumapangitsa wovalayo kuwoneka wokalamba. Akatswiri osamalira maso amakana zimenezo ngati njira yakale yowonera kuwerenga magalasi, makamaka poganizira kuti anthu aku America oposa 150 miliyoni amavala magalasi owongolera maso.
Kodi magalasi owerengera ndi chiyani?
Magalasi owerengera, omwe amapezeka m'masitolo ogulitsa kapena m'masitolo ogulitsa mankhwala, amathandiza kuti munthu azitha kuwerenga zinthu pafupi, monga buku kapena kompyuta.
Magalasi owerengera omwe amagulitsidwa pamtengo wotsika — omwe angagulidwe m'masitolo ogulitsa mankhwala, m'masitolo akuluakulu ndi m'masitolo ena ogulitsa popanda mankhwala — amapangidwira kuvala kwakanthawi kochepa, ndipo ndi oyenera anthu omwe ali ndi mphamvu yofanana ya lenzi, kapena mphamvu, m'diso lililonse ndipo alibeastigmatism, vuto lofala lomwe limayambitsamaso osawona bwino.
Mphamvu ya magalasi owerengera omwe amagulitsidwa pamtengo wotsika nthawi zambiri imakhala kuyambira pa +1 mpaka +4. Magalasi owerengera omwe amagulitsidwa pamtengo wotsika ndi njira yovomerezeka kwa anthu omwe ali ndi masomphenya abwino patali (kuwona patali).
Komabe, ngati mukuvutika ndivuto la maso la kompyutakapenamaso awiri, ndiye kuti ndi bwino kufufuza magalasi owerengera mankhwala.
Magalasi owerengera mankhwala akuyenera kuvalidwa kwa nthawi yayitali, ndipo ndi abwino kwa anthu omwe ali ndi vuto la astigmatism, myopia, matenda aakulu a maso kapena mphamvu yofanana ya mankhwala m'diso lililonse.
Kodi ndi liti pamene mufunika magalasi owerengera?
Aliyense amene ali ndi zaka za m'ma 40 kapena kupitirira apo, nthawi ina, adzafunika magalasi owerengera (kapena mtundu wina wa kukonza maso pafupi ndi maso).
Magalasi owerengera amathandiza kuchepetsa vuto la masomphenya chifukwa chapresbyopia, kutayika kwachibadwa kwa luso loyang'ana zinthu zomwe zili pafupi, monga mawu m'buku kapena uthenga pafoni yam'manja chifukwa cha ukalamba.
Kawirikawiri mumazindikira kufunika kowerenga magalasi ngati mukukumana ndi vuto powerenga zilembo zazing'ono mukatopa komanso pamene kuwala m'chipindamo kuli kochepa, kapena ngati mukuona kuti n'kosavuta kuwerenga chinachake mukachikoka kutali ndi nkhope yanu.
Poganizira magulu osiyanasiyana ndi zosowa, Universe Optical imapanga mitundu yambiri ya magalasi owoneka m'ma index onse ndi zipangizo zosiyanasiyana, nthawi zonse mutha kudalira ndikusankha galasi loyenera kwambiri kwa inu nokha.