Kunja kwa mbewa kumapangidwa kuti zithetse ziwonetsero zakunja, zimafunikira ukadaulo wapadera kuti mukhalebe okhazikika komanso magwiridwe antchito. Kusintha kwakukulu kumaphatikizapo kutetezedwa ndi chilengedwe kwa UV ndi radiation ya ir, yomwe imatha kuwononga zida zowonetsera ndikusokoneza magwiridwe antchito. Kutentha kwambiri kwa siltetering inki yosindikiza imagwiritsidwa ntchito pazenera kuti muchepetse kutha kwa dzuwa. Anti-glare (AG) ndi anti-yotsutsa (AR) amachepetsa kuwala ndi kuvuta kwa maso, kukonza kuwerengera bwino.
Kugwiritsa ntchito galasi kumalimbikitsa kuthana ndi kusweka ndi kukanda, kuyenera kwa malo oyenera anthu kapena odziwikiratu. Kunja kwa zowombera kumayenera kukhala ndi magwiridwe antchito onyowa, ndipo mafakitale ogwiritsa ntchito mafakitale amaphatikizidwa kuti athandizidwe ndi galasi lakuthwa, kukonza kukhazikika komanso kuyankha. Mankhwala ogwiritsira ntchito mafuta, monga kutenthetsa zinthu ndi matekinoloje ozizira, onetsetsani kuti zokongoletsera zimagwira ntchito mokwanira pamatenthedwe osiyanasiyana.
Kuwala kwambiri ndikofunikira kuti muwerengenso dzuwa. Kuti mupeze magwiridwe antchito abwino, zokongoletsera zokhazokha zimayesedwa chifukwa cha chidwi chawo komanso kugwirana bwino. Zokutira za chitetezo ndi UV ndi UV ndi magwiritsidwe ntchito zimagwiritsidwa ntchito paphiri lagalasi, inki yotentha kwambiri yosindikiza pazenera, ndipo kukhudza kwa mafakitale kukhazikika kumaphatikizidwa chifukwa cha kulimba komanso kugwira ntchito. Kuphatikiza apo, galasi la Vandal limagwiritsidwa ntchito poteteza komanso kulimba mtima.
