Ama-lens Multifocal - kuyini?

Mayelana nokuthi yikuphi - amalensi wokuxhumana amaningi - abantu abaneminyaka ephakathi nangaphezulu bayakwazi kangcono. Ziyindlela ehlukile emagalazini avamile futhi ihloselwe ukulwa ne-presbyopia - yobudala - ubude . Ngenxa yesifo, i-lens ilahlekelwa ukuqina kwayo, ayikwazi ukushintsha ukuma kwayo, okuholela ekukhubaleleni okubonakalayo.

Iyini i-lens multifocal?

Ama-lens oxhumana nabo alula kakhulu angama-bifocal. Zinezindawo ezimbili kuphela zokuvula. Lezi zamuva zihanjiswa ngokucacile: eyodwa ihloselwe ukubona eduze, enye ide kakhulu. I-lens multifocal engcono kakhulu ithuthukisiwe. Zingafaniswa nezibuko eziqhubekayo kakhulu. Zinemikhakha eminingana yamandla ahlukene e-optical, ahlinzeka ngokuguquguquka okushelelayo. Okokuthi, umuntu e-multifocal lens angahamba kancane kancane ekufundeni ifonti encane encwadini etholakala ngqo ebusweni, ukubuka into ehamba phambili.

I-Implantirovan multifocal lenses, uzokhohlwa ngezinkinga eziningi. Okokuqala, ngcono ngokubukeka. Okwesibili, akudingeki ukuba uthwale ama-pair of glasses ahlukene. Okwesithathu, ukulungiswa kuyobekwa ngokwethembeka futhi kukhululekile kakhulu emehlweni.

Ngokuhambisana nalezi zinzuzo, kunamalense nokungalungi:

1. Akulula ukuzijwayeza.
2. Amalensi okulungisa ama-Multifocal yinjabulo ebiza kakhulu. Noma kunjalo, ungakhetha njalo umklamo lula.
3. Phakathi nesikhathi sokulutha umuthi, okuthiwa i-jumps of sight ingabonwa: ekuseni kusuke kungacacile, futhi kuseduze nobusuku, ngokuphambene - kuthuthukisa.

Izinhlobo eziyinhloko zama-lens multifocal

Kunezinhlobo ezintathu eziyinhloko zama-lens:

1. Izinguquko ezihambisanayo - ezilula kakhulu futhi ezizwakalayo. Ngezansi kukhona indawo yombono oseduzane, nangaphezulu - okude. Izindawo ezingenhla nezingezansi zichazwe ngokucacile. Futhi ukuze bangahlanganisi futhi bayilimaze amehlo, i-lens kufanele izinze.
2. Ezingxenyeni ezibhekisiwe ze-bifocal, izingxenye zombono zonyaka, futhi zihlukile. Ukuklama kwama-lens kuyahluka kuye ngokuthi iyiphi indawo ephakathi nendawo.
3. Okubaluleke kunazo zonke ama-lens multifocal aspherical for glasses. Kuwo, amandla okukhanyisa okukhanya ahluka ukusuka phakathi nendawo kuya endaweni ehamba phambili. Zifanele bonke abantu abane-presbyopia, ngaphandle kwalabo abadinga umehluko omkhulu phakathi kokusondela nakude.

Ungakhetha kanjani ama-lens multifocal?

Yiqiniso, udinga ukwenza lokhu kuphela emva kokubonisana nochwepheshe kanye nokuhlolwa okuningi - imingcele ye-cornea inqunywa: i-pachymetry ebonakalayo, inkomba ye-asphericity, indawo yesikhungo somfundi, ukuvinjelwa kwayo, ububanzi. Ngaphezu kwalokho, ukuhlolwa kwe-retina kanye nezinsimu ezibukwayo kwenziwa, ukukhishwa okuhloswe futhi okuzithobayo ezindaweni ezihlukene kuyatholakala.

Amalensi wamanje akhiwa ngezinto ezikhethekile ze-silicone-hydrogel ezidlula oksijini futhi ziqukethe umswakama okwanele. Zithambile futhi zinzima. Njenge-spherical evamile, i-lens multifocal ingaba nsuku zonke, isimiso nesimiso sendabuko. Njengomthetho, ama-lens afanele kunazo zonke anziwe ukuze ahleleke.

Ukukhethwa kwama-lens adingekayo kwenziwa ngezinyathelo eziningana:

1. Ukuhlola amehlo ophthalmologist.
2. Ukukhetha uhlobo olufanele kakhulu lens.
3. Isinyathelo esidingekayo ukufaneleka kokuhlolwa. Isiguli kufanele siqonde ukuthi uzizwa ukhululekile nalabo noma amanye amalensi futhi empeleni ubona kangcono.
4. Okubalulekile nakancane isiteji sokuqeqesha. Uchwepheshe kufanele akutshele indlela yokugqoka kahle ama-lens, ukuthi zidinga kangakanani ukuguqulwa, yiziphi amathiphu ayisisekelo okunakekelwa .