Ndi mandala amtundu wanji ndi ma lens opita patsogolo a multifocal?

Choyamba, lens yopita patsogolo ya multifocal ndi chiyani?
Kupitilira 1, kuyang'ana kwapang'onopang'ono magalasi amakhala mu mandala omwewo patali pakati pa kuwala ndi kutsala pang'ono kutha, ndi njira ya dioptre yosintha pang'onopang'ono, kuchokera pang'onopang'ono kuyandikira kugwiritsa ntchito kuwerengera kumatha ndipo pafupifupi kutha kwa organic palimodzi, motero a mandala nthawi yomweyo ndi tione mtunda, mtunda wapakati ndi kutseka chofunika osiyana luminosity.

Magalasi opita patsogolo ali ndi magawo atatu ogwira ntchito
Malo oyambirira ogwira ntchito ndi malo akutali omwe ali pamwamba pa lens.Kutalikirana ndi kuchuluka kwa madigiri omwe amafunikira kuti muwone kutali, omwe amagwiritsidwa ntchito kuwona zinthu zakutali.
Malo achiwiri ogwira ntchito ndi malo oyandikana nawo omwe ali m'munsi mwa lens.Kuyandikira ndi kuchuluka kwa madigiri ofunikira kuti muwone zinthu zapafupi.
Chigawo chachitatu ndi chapakati chomwe chimagwirizanitsa ziwirizo.Imatchedwa gradient area, yomwe pang’onopang’ono imasintha mlingo wa kuyang’ana kutali kufika pa mlingo wa kuyang’ana pafupi, kotero kuti ukhoza kugwiritsira ntchito kuwona zinthu zapakati pa mtunda.M'mawonekedwe, ma lens opitilira muyeso samadziwika ndi ma lens wamba.

Awiri, ndi mitundu yanji ya magalasi opitilira ma multifocal?
M'zaka zaposachedwa, ma lens opita patsogolo a multifocal akhala akupanga ndikutchuka mwachangu ku China.Pakalipano, malinga ndi momwe amagwiritsira ntchito diso komanso mawonekedwe a thupi la anthu azaka zosiyanasiyana, kafukufuku wofanana pa magalasi amitundu yambiri akhoza kugawidwa m'magulu atatu:
1. Lens yoyang'anira achinyamata a myopia.Ntchito kuchepetsa maso kutopa ndi kulamulira chitukuko cha myopia.
2. Anti-kutopa magalasi akuluakulu.Amagwiritsidwa ntchito kwa anthu ambiri omwe amagwira ntchito chapatali kuti achepetse kutopa kwamaso komwe kumachitika chifukwa cha ntchito.
3. Magalasi opita patsogolo azaka zapakati ndi okalamba.Magalasi a anthu azaka zapakati ndi okalamba amatha kuwona kutali ndi pafupi, kuti maso anu apeze kumverera kwaunyamata.

Chachitatu, Kodi ntchito ya ma lens a multifocal opitilira patsogolo ndi chiyani?
(1) Kuchepetsa kutopa zithunzi ndi kulamulira chitukuko liwiro la myopia, koma si achinyamata onse ali oyenera kuvala patsogolo multifocal magalasi, anthu ndi ochepa, mandala ali ndi zotsatira zina pa kusintha kwa lag ndi mosabisa oblique myopia ana.
Zindikirani: Chifukwa odwala ambiri omwe ali ndi myopia amakhala ndi matsenga akunja osati matsenga, chiwerengero cha anthu omwe ali oyenerera kuvala magalasi opita patsogolo kuti athe kuwongolera myopia ndi ochepa, omwe amangowerengera pafupifupi 10% ya ana ndi achinyamata omwe ali ndi myopia.
(2) Aphunzitsi, madokotala, mtunda wapafupi komanso anthu ambiri omwe amagwiritsa ntchito makompyuta, pofuna kuchepetsa kutopa kwa maso komwe kumabwera chifukwa cha ntchito.
Kwa anthu azaka zapakati ndi okalamba omwe ali ndi magalasi kuti aziwona mosavuta pafupi.Progressive multifocal lens idapangidwa kuti ipereke njira yachilengedwe, yabwino komanso yabwino kwa odwala presbyopia kuti akonze.Kuvala mandala opita patsogolo kuli ngati kugwiritsa ntchito kamera ya kanema.Magalasi amatha kuwona zinthu zakutali, zapafupi komanso zapakatikati bwino.Choncho, timalongosola magalasi opita patsogolo monga "magalasi omwe amawonekera", ndikuvala magalasi omwe ali ofanana ndi kulipira zambiri za magalasi.

Chachinayi, ndiyenera kuyang'ana chiyani ndikavala magalasi opitilira muyeso?
(1) Posankha galasi lagalasi, kukula kwake kumakhala kovuta.M'pofunika kusankha yoyenera chimango m'lifupi ndi kutalika malinga ndi wophunzira mtunda.
(2) Mutavala magalasi, mukamayang'ana zinthu kumbali zonse ziwiri, mukhoza kupeza kuti kumveka kumachepa ndipo chinthucho ndi chopunduka, zomwe zimakhala zachilendo.Panthawiyi, muyenera kutembenuza mutu wanu pang'ono ndikuyesera kuwona kuchokera pakati pa disolo, ndipo kusapezako kudzazimiririka.
(3)Potsika pansi, magalasi azikhala otsika kwambiri kuchokera pamwamba kuti awone kunja kwa dera.
(4) Glaucoma, kuvulala kwamaso, matenda oopsa a maso, matenda oopsa, khomo lachiberekero spondylosis ndi anthu ena osavomerezeka kugwiritsa ntchito.