Kodi ma lens a multifocal progressive ndiabwinodi?

Anthu ambiri amene avala magalasi kwa zaka zambiri
Pakhoza kukhala kukayikira kotere:
Kuvala magalasi kwa nthawi yayitali, sikudziwika bwino gulu la magalasi
Myopia ndi hyperopia?Kodi single-focus ndi multifocus ndi chiyani?
Wopusa sangadziwe kusiyana kwake
Kusankha magalasi ndikosokoneza kwambiri:
Ndi mandala amtundu wanji omwe ali oyenera kwa inu?
Kodi pali mitundu yonse ya ntchito?Kodi ndikufunika chiyani?

Pali mitundu yonse ya magalasi;
Ngati mandala agawika kuchokera komwe amayang'ana, atha kugawidwa kukhala ma lens amodzi (monophoto), ma lens awiri, ma lens angapo.
Ma lens opita patsogolo, omwe amadziwikanso kuti ma lens opita patsogolo, amakhala ndi malo angapo pamagalasi.
Lero tikambirana za multifocal patsogolo magalasi

Kodi ma lens opitilira multifocal ndi chiyani?
Magalasi opita patsogolo a multifocal, omwe amakhala ndi malo angapo pa lens imodzi nthawi imodzi, amasintha pang'onopang'ono kuchokera kudera lakutali pamwamba pa mandala kupita kudera lapafupi lomwe lili pansi.

Kukhala ndi madigiri angapo pa lens imodzi kumagawidwa m'madera atatu: kutali, pakati ndi pafupi:

1, mawonekedwe apamwamba akutali
Amagwiritsidwa ntchito pakuwona mtunda wautali, monga kusewera, kuyenda, etc
2, pakati pa chigawo chapakati
Kwa masomphenya apakati, monga kuonera kompyuta, kuonera TV, etc
3. Mawonedwe apansi pafupi ndi malo
Amagwiritsidwa ntchito powonera kwambiri, monga kuwerenga mabuku, manyuzipepala, ndi zina
Chifukwa chake, kuvala magalasi okha, kumatha kukwaniritsa zofunikira kutali, onani, masomphenya apafupi.

Normal physiological phenomena:

Presbyopia, yomwe imawonekera pang'onopang'ono ndi kukula kwa msinkhu, imawoneka ngati yosaoneka bwino komanso yosatha kuona zinthu pafupi.Mkhalidwewu udzachepetsa kugwira ntchito bwino komanso kukhudza moyo wabwino.
Magalasi a Progressive multifocal ndi njira yabwino yothetsera vutoli
Ndi ntchito yabwino kwambiri
Wokondedwa komanso wofunidwa kuyambira pomwe adalemba