Parizvino, mapepa emasikirini anononoka anogona kushandiswa kune chero mhando ipi zvayo yekusaona kwemaonero ekudzora uye, kana kusina kupesana, zvinonyanya kushandiswa, zvinyararire zvimwe kune magirazi. Kunyangwe kutyora kwakaoma kwakadai semastigmatism, iyo yakanga isati yakwanisa kugadziriswa chete kuburikidza nemagalazi uye zvakaoma kugona lenzi, izvo zvinokonzera kukanganisa kwakawanda, zvino zvinokwanisa kugadziriswa nekubatsira kwavo. Kugadzirisa astigmatism, kukanganiswa kwema-lens anonyanya kushamwaridzana kunoratidzwa, uye izvi zvinoshandawo kune-grade-grade astigmatism. Ngationgororei zvakadzama kuti chii chinonzi toric lenses, chii chinoshandiswa nemarori aya ekusarudzwa uye kupfeka.
Chii chinonzi "toric contact lenses" zvinorevei?
Toric lens is lens yegadziriro yakasarudzwa, iyo, kusiyana nemagetsi anowanzoitwa, inozivikanwa nehukuru hwakakura uye spherocylindrical shape, i E. ivo panguva imwechete vane maoko maviri optical. Izvi zvinodiwa kuitira kugadzirisa astigmatism nerubatsiro rwechimwe chete pamwe chete nemerieri inodikanwa, uye nekubatsirwa kweimwe humwe kukosha kururamisa hutachiona hwekudzivisa-hyperopia kana kutarisa .
Astigmatism isina kusimba, umo simba rekuona reziso hazvina kufanana muzvikamu zvakasiyana, i.e. Mune ziso rimwe, maitiro akasiyana ekudzivisa kana zvidimbu zvakasiyana zvechimiro chakafanana chekudzora chinosanganiswa. Chirwere chechipatara muzviitiko zvakawanda chinosanganiswa nechinhu chisina kujeka (zvisina kufanira, chisingabvumirwi) chinonzi cornea kana lens, kana ichipfuura nepakati mairi chiedza chinopikiswa nenzira dzakasiyana. Kune murwere, izvi zvinoratidzwa mukushaya kukwanisa kutarisa chifananidzo, chinenge chichioneka chisina kujeka, chisina kumira, uyewo zviratidzo zvakadai semusoro, maziso eronda .
Kuti chiito che cylindrical chikamu chechirusi chemajeri chiendeswe kune chidimbu chechidimbu chinonzi cornea, lenzi yakadaro inofanira kunge yakanyatsotsanangurwa. Nokudaro, kuwedzera kune zvakasarudzwa pamusoro apa, majekiseni ekugadzirisa astigmatism ane gadziriro yekugadzirisa yakanakira kuchengetedza iwo munzvimbo yakagadzikana, iyo isingabatanidzwi nekunyenyeka kwemaziso, kufamba kwemaziso uye musoro. Kugadziriswa kunogona kuwanikwa nenzira dzakasiyana-siyana, pakati peiyo kuwedzera kwema-lenses munzvimbo yavo yepasi, truncation yemucheto wakadzika we-lenses,
Kusarudzwa kwetrisic lenses
Toric lenses haigoni kutengwa nekutsvaga optics salon. Nokuda kweizvi, zvakakosha kuongororwa ne ophthalmologist uye kuongorora inosanganisira ophthalmometry, refractometry nedzimwe nzira. Mukuwedzera, zera remurwere, mamiriro emabasa ake anotorwa. Pakutanga, sarudzo dzakasarudzwa dzinoongorora dzakaedzwa, izvo murwere anofanira kuzviendesa kwehafu yenguva. Kana zviyero zvose zvakakosha zvakasangana, zvino maererano nevakasarudzwa maitiro, munhu mumwe nomumwe lenzi anogadzirwa. Kana zvisina kudaro, kusarudzwa kwe lenses kunopfuurira.
Kana ukapfeka mavhiri lenzi, inofanira kutakurwa mupfungwa kuti, kubvira ipapo ivo vane hukuru hwakakura kudarika nguva dzose, pasina mamiriro ezvinhu vanogona kuwedzerwa kwenguva yekushandiswa, inoshungurudza matambudziko e hypoxic (kushayikwa kweokisijeni kune zvinyuchi zveziso). Zvakakosha kuchengetedza nguva yekupindurwa, iyo
Uyewo, munhu haafaniri kukanganwa kuti maziso ekutakura ane nguva yakareba yekupfeka inotarisirwa zuva rega rega nemararamiro evanhu vakawanda.
Vatungamiri vanotungamirira vatambi vekutsvaga mazhenzi ndivo makambani:
- Johnson & Johnson;
- Bausch & Lomb;
- Wohlk-Contact-Linsen et al.