Zodziwikiratu masiku ano Momwe mungapangire magalasi kukhala "oonda, owonda komanso owonda kwambiri"?
Monga ife tonse tikudziwa, mlingo wa myopia ndi otsika, ndi osiyanasiyana magalasi kuti mafelemu ndi lonse kuposa mkulu myopia. Kotero kwa anthu omwe ali ndi myopia yapamwamba, ndi magalasi otani omwe ayenera kukhala abwino kwambiri kwa iwo? Lero tsatirani mayendedwe a mkonzi, tiyeni tipite limodzi.
1.Kodi anthu a myopic amafuna chiyani?
Choyipa chachikulu cha myopia yayikulu ndikuti mphamvu ikakhala yayikulu, disolo limakulirakulira. Choncho, aliyense amafuna kuti mandala akhale ochepa komanso ochepa kwambiri posonkhanitsa lens yamphamvu kwambiri.
Komabe, digiri iliyonse imakhala ndi makulidwe, ndipo kuchuluka kwa refractive index kumachepetsa makulidwe malinga ndi makulidwe a mandala omwewo. Ngakhale ndi mandala 1.74, iyenera kukhala yokulirapo kuposa digiri yotsika.
2.Kodi kusankha magalasi kwa mkulu myopia?
Ndikukhulupirira kuti aliyense amadziwa kuti pakati pa lens ndi wandiweyani ndipo mbali zake ndi zoonda. Ndiye ngati mukufuna mandala woonda, mutha kusankha mandala 1.74. Izi ndithu si vuto. Ndi chiyani chinanso chomwe mungachite kuti mupeze zotsatira zabwino? Mkonzi wafotokozera mwachidule njira zingapo kwa aliyense, ndipo abwenzi angayesere pamene akusonkhanitsa magalasi.
(a) Mukasankha chimango cha acetate, makulidwe omwe chimangocho chingatseke chidzakhala chochuluka kwambiri ndipo chidzawoneka chochepa kwambiri, ndipo chimango cha acetate sichidzakakamiza mlatho wa mphuno yanu chifukwa magalasi ndi olemera kwambiri.
(b) Kusankha chimango chaching'ono kudzathandiza kuti magalasi onse awoneke ochepa kwambiri, chifukwa magalasi ndi ochepa kwambiri pakati ndi ozungulira kumbali zonse, kotero kusankha chimango chaching'ono kumapangitsa kuti magalasiwo akhale ochepa kwambiri.
(c) Pakukonza, mbuye amadula m'mphepete pang'ono kuti achepetse makulidwe a mandala. Ngati ngodya iyi yadulidwa kwambiri, bwalo loyera likhoza kuwonjezeka, ndipo kuchepa kwake sikungapindule ngati kudula kuli kochepa. Zitha kusankhidwa malinga ndi zomwe mumakonda, ndipo ndizotheka kuuza purosesa.
Nthawi yotumiza: Jul-22-2021