1. Itha kugwiritsidwa ntchito patali komanso pafupi, palibe chifukwa chosinthira magalasi pafupipafupi, yabwino
Magalasi a Bifocal ndi kamangidwe kake ka magalasi komwe kamatha kukwaniritsa zosowa zakutali komanso kuyang'ana pafupi ndi presbyopia popanda kufunika kosintha magalasi pafupipafupi. Magalasi awa mosakayikira ndi chisankho chabwino kwa iwo omwe akufunika kuchita ntchito zakutali komanso zapafupi. Simufunikanso kunyamula magalasi awiri pamene mukutuluka. Kaya mukuyendetsa galimoto, kuwerenga, kuonera TV, kapena kugwiritsa ntchito foni yanu yam'manja, mutha kuchita zonsezi ndi lens imodzi.
2. Kuphatikizidwa ndi magalasi adzuwa, kumathandizira kuwerenga padzuwa komanso kumateteza maso.
Magalasi adzuwa ndi mbali yaikulu ya magalasi a bifocal. Imagwiritsa ntchito ma lens apamwamba kwambiri a dzuwa, omwe amatha kusefa bwino kuwala kwa ultraviolet ndi kuwala kwamphamvu kuteteza maso anu kuti asawonongeke. Kaya ndizochitika zapanja, maulendo, tchuthi, kapena ntchito zatsiku ndi tsiku, magalasi owerengera dzuwa awa amatha kukupatsani masomphenya omveka bwino komanso kuwerenga momasuka powerenga padzuwa. Perekani maso anu chitetezo chokwanira.
3. Support kachisi LOGO ndi akunja ma CD mwamakonda
Magalasi a Bifocal sikuti ndi othandiza komanso apamwamba komanso amathandizira makonda anu. Mutha kusintha mawonekedwe a LOGO pamakachisi malinga ndi zomwe mumakonda ndipo muyenera kupanga magalasi anu kukhala apadera kwambiri. Kupaka kunja kungathenso kusinthidwa malinga ndi zomwe mukufuna kuti muwonjezere kuwonetsera ndi kulengeza kwa chithunzi cha chizindikiro. Ntchito yokhazikika iyi komanso yosinthidwa mwamakonda anu imakuthandizani kuti mukhale ndi magalasi apadera a bifocal.
4. Zida zapulasitiki zapamwamba, zolimba kwambiri
Magalasi owerengera dzuwa a Bifocal amapangidwa ndi zinthu zapulasitiki zapamwamba kwambiri zolimba komanso zolimba. Sikophweka kupunduka kapena kuvala ndipo imatha kupirira kugwiritsidwa ntchito kwa nthawi yayitali komanso kukangana pafupipafupi. Zinthu zapamwambazi sizimangotsimikizira moyo wautumiki wa magalasi komanso zimakupatsani mwayi wovala bwino, zomwe zimakulolani kugwiritsa ntchito magalasi a bifocal mosavuta nthawi iliyonse komanso kulikonse.
5. A zosiyanasiyana chimango mitundu kusankha
Magalasi a Bifocal amapezeka mumitundu yosiyanasiyana yamafelemu. Kaya mumakonda makiyi otsika komanso osavuta akuda, owoneka bwino komanso ofiira owala kapena mitundu ina, mutha kusankha malinga ndi zomwe mumakonda. Kusankhidwa kwamtundu wolemera sikungokwaniritsa zosowa zanu zokongola komanso kupanga magalasi anu kukhala gawo la kalembedwe kanu, kusonyeza umunthu wanu wapadera.