Magalasi omwe mukufunamagalasi anuzidzadalira mankhwala anu agalasi.Musanagule magalasi atsopano, konzekerani kuyezetsa maso ndi dokotala wamaso.Adzazindikira mtundu wa masomphenya omwe mukufuna.
Masomphenya Amodzi
Magalasi agalasi amodzi ndi otsika mtengo komanso odziwika bwino a magalasi agalasi.Iwo ali ndi gawo lalikulu la masomphenya chifukwa amangowongolera masomphenya pamtunda umodzi (kutali kapena pafupi).Izi zimawalekanitsa ndi magalasi ambiri omwe afotokozedwa pansipa.
Dokotala wanu akhoza kukupatsani magalasi a masomphenya amodzi ngati muli ndi chimodzi mwa izi:
Kuwona pafupi
Kuona Patsogolo
Astigmatism
Bifocals
Ma lens a Bifocal ali ndi mawonekedwe ambiri, kutanthauza kuti ali ndi "mphamvu" ziwiri zosiyana.Magawo osiyanasiyana awa a lens amawona mtunda wolondola komanso masomphenya apafupi.
Magalasi a Bifocal amaperekedwa kwa anthu omwe ali ndi vuto la masomphenya ambiri.
Trifocals
Ma lens a Trifocal ndi ofanana ndi ma bifocals.Koma ali ndi mphamvu yowonjezera yokonza masomphenya apakati.Mwachitsanzo, gawo lapakati litha kugwiritsidwa ntchito powonera pulogalamu yapakompyuta.
Cholakwika chachikulu cha bifocals ndi trifocals ndikuti ali ndi mzere wosiyana pakati pa gawo lililonse la masomphenya.Izi zimapangitsa zigawo za lens kupanga masomphenya osiyana kwambiri.Anthu ambiri amazolowera izi ndipo alibe vuto.Koma zovuta izi zapangitsa kuti pakhale magalasi apamwamba kwambiri, monga opita patsogolo.
Opita patsogolo
Magalasi opita patsogolo ndi mtundu wina wa ma lens a multifocal.Amagwira ntchito kwa aliyense amene akufuna ma bifocals kapena trifocals.Magalasi opita patsogolo amapereka kuwongolera komweko kwa kuyang'ana pafupi, apakatikati, ndi patali.Amachita izi popanda mizere pakati pa gawo lililonse.
Anthu ambiri amakonda magalasi owoneka bwino awa chifukwa kusintha pakati pa magawo owonera ndikosavuta.
Nthawi yotumiza: Mar-15-2023