Magalasi adzuwa: Magalasi adzuwa poyamba amatchedwa sunshades, koma kuwonjezera pa shading, amakhalanso ndi ntchito yofunikira, chitetezo cha UV! Choncho, si magalasi onse achikuda omwe amatchedwa magalasi a dzuwa. Potsata mafashoni, tiyeneranso kulabadira mtundu wa magalasi. Apo ayi, magalasi a magalasi sangagwire ntchito ya sunshade, komanso akhoza kuwononga maso. Kotero ziribe kanthu zomwe mumagwiritsira ntchito magalasi, choyamba muyenera kusankha magalasi oyenerera ndi kuwagwiritsa ntchito moyenera.
Kusonkhanitsa kwakukulu kwanzeru pakugwiritsa ntchito magalasi adzuwa:
1. Kuvala molakwika magalasi adzuwa ndikosavuta kudwala maso. Osavala magalasi pamasiku a mitambo komanso m'nyumba.
2. Kuvala magalasi madzulo, madzulo, ndi kuonera TV kudzawonjezera mtolo wa kusintha kwa maso, ndipo kumakhala kosavuta kufooka kwa maso, kutaya maso, kusawona bwino, chizungulire ndi chizungulire.
3. Anthu omwe ali ndi machitidwe osawona bwino monga makanda ndi ana sali oyenera kuvala ma lens.
4. Pamene kuvala pamwamba pa magalasi a magalasi kwakhudza kumveka bwino, sinthani magalasi mu nthawi.
5. Anthu omwe akugwira ntchito mu glare, madalaivala, ndi zina zotero, akulimbikitsidwa kusankha magalasi a polarized; mukakhala pamalo owala, sikoyenera kusankha magalasi osintha mtundu.