Magirazi ekutsvedza muchando magirazi anopfekwa kudzivirira maziso paunenge uchitsvedza muchando. Magirazi ekutsvedza muchando anodiwa kudzivirira maziso emutsvedzi nekuda kwekupenya kwakasimba kwezuva pachando uye kukurudzirwa kwemaziso nemhepo inotonhora panguva yekutsvedza. Zvinofanira kucherechedzwa kuti vanotsvedza muchando vanopfeka magirazi vanofanira kusarudza magirazi echando eOTG (Over The Glasses) kuti vafukidze zvakakwana myopia yavo.

Basa
Magirazi ekuski akashanduka kubva pakuva nechikamu chimwe chete kuenda pachikamu chechipiri, kubva pakusava nemhute kusvika pakuva nemhute, uye anogona kushandiswa mumamiriro ekunze akasiyana siyana sezvo sainzi netekinoroji zvafambira mberi. Furemu yacho yakagadzirwa nepurasitiki, iyo yakachengeteka, uye lenzi yacho ingave yero kana brown muruvara. Zvinhu zvinotevera zvinofanirwa kuiswa mumagirazi ekuski:
Chekutanga, dzivirirai mhepo inotonhora kuti isakutsamwisai; chechipiri, dzivirirai mwaranzi ye ultraviolet kuti isapisa maziso enyu.
Chechitatu, lenzi yemukati haibvisike.
Chechina, magirazi ekutsvedza nechando haafanire kukonzera kukuvara kwechiso mushure mekudonha. (Cherechedza: Kuti vafukidze myopia zvizere, vanotsvedza nechando vanopfeka magirazi vanofanira kusarudza magirazi ekutsvedza nechando eOTG (Over The Glasses).

Cheshanu, kuramba kukanganiswa kwelenzi, chiyero chepasi rose chinofanira kupasa bvunzo yebhora rekudonha (DROP BALL TEST) uye bvunzo yekudzivirira kukanganiswa.