Ruzivo rwekutanga rwemagirazi ekuverenga iwe unofanirwa kuziva

Magirazi ekuverengera imhando yemagirazi emaziso, ayo anopa myopia magirazi anowanzoshandiswa nevanhu vane presbyopia, ayo ari econvex lens. Magirazi ekuverenga anoshandiswa kuzadza maziso evanhu vepakati nepakati uye vakura. Kufanana nemagirazi emyopia, vane akawanda emagetsi optical index makosi anodiwa nemhando yeindasitiri yenyika, uye zvakare vane mamwe akasiyana akasarudzika ekushandisa. Naizvozvo, magirazi ekuverenga anofanira kunge aine magirazi.

Kutanga, iyo yekutanga classification yekuverenga magirazi

Parizvino, kune matatu akakosha marudzi ekuverenga magirazi pamusika, anoti single vision lens, bifocal lens uye asymptotic multifocal lens.

Single vision lens inogona chete kushandiswa kuona pedyo, uye kuona kunofanirwa kudzoreredzwa kana wakatarisa kure. Inokodzera chete vanhu vane presbyopia iri nyore uye yakaderera frequency yekushandisa magirazi ekuverenga;

Mabifocals anoreva magirazi ekuverenga ane lens yekumusoro yaishandiswa kuona kure, uye yezasi hafu yegirazi lens yaimboonekwa padyo, asi magirazi ekuverenga akadaro achange aine kusaona uye kusvetuka, uye kupfeka kwenguva refu kunowanzo kurwadza kweziso, dzungu. , nezvimwewo, dhizaini yemumba haina kunaka, uye haina kujairika ikozvino; iyo asymptotic multifocal lens inogona kusangana nezvinodiwa zvekutadza kuona pamadaro akasiyana ari chinhambwe, chepakati nepedyo. Chitarisiko chakakwirira-tech uye fashoni, uye inonyanya kukodzera myopia yemazuva ano kupfuura makore makumi mana. Ziso pamwe ne presbyopia, astigmatism boka rinopfeka.

Chechipiri, mamiriro ekushandisa ekuverenga magirazi

Presbyopia chinhu chakajairika chemuviri, kwete chirwere chemaziso, uye hachisi munhu akura chete. Mushure memakore makumi mana, nekuoma zvishoma nezvishoma kwemakemikari fibers yeziso reziso uye kupera zvishoma nezvishoma kwemuviri weciliary, ziso remunhu harigoni kugadzirisa zvinonzwisisika kuonekwa kwekutarisa (radial transformation). Zvichienderana nechinhambwe chiri pakati pezvinhu, unofanira kuenda kure kana wakatarisa zvinhu zviri pedyo usati wanyatsoona. Mamiriro emeso maviri panguva ino anonzi presbyopia.

Kana presbyopia ichida kushandisa chiono cheziso pane yepakutanga chinhambwe chinhambwe, zvinodikanwa kupfeka magirazi ekuverenga kuzadza muono weziso, kuitira kuti chiono chepedyo chionekwe zvakajeka zvakare. Meso maviri maviri. Chiyero che myopia mu presbyopia chakabatana nezera. Nekuwedzera kwezera, kuora kweziso reziso kuchawedzera, uye chiyero che myopia chichawedzera zvishoma nezvishoma.

Presbyopia yakatoitika, uye kana iwe ukaomerera pakusapfeka magirazi ekuverenga, muviri weciliary uchave wapera simba uye usingakwanise kugadzirisa, izvo zvichatowedzera kuoma kwekuverenga, kukonzera dzungu, dzungu uye zvimwe zvirwere zvakawanda, izvo zvichaisa mungozi hupenyu hwezuva nezuva. shanda. Kuzviremekedza kwepamusoro. Nokudaro, magirazi epresbyopia anofanirwa kufananidzwa pakarepo pasina kunonoka (vanhu vechiChinese vane pfungwa isina kururama: vanofunga kuti kupfeka magirazi ekuverenga "chirwere" chakakomba, uye havazivi kuvapo kwemagirazi ekuverenga. Iyi ipfungwa isina kururama) .

Mushure mekunge vakura, magirazi ekuverenga aive aine myopia isina kukwana anofanirwa kutsiviwa nekukurumidza. Nokudaro, magirazi ekuverenga haafaniri kupfekwa nguva dzose. Kupfeka kwenguva refu magirazi ekuverenga ane dhigirii isina kufanira yemyopia hakungokonzeri dambudziko rakawanda rehupenyu hwezuva nezuva, asiwo ramba uchimhanyisa nzira yebinocular presbyopia.

Mumamiriro ezvinhu akajairwa, kune maviri makuru kuratidzwa kwe presbyopia mukutanga nhanho:

Chekutanga ibasa repedyo kana kuverenga kwakaoma. Somuenzaniso, paunenge uchiverenga, unofanira kubatirira bhuku racho kure, kana kuti unofanira kuverenga munzvimbo ine chiedza chakasimba kuti urizive.

Chechipiri kuneta kwemaziso. Nekuderedzwa kwesimba rekugara, zvinodiwa zvekuverenga zvishoma nezvishoma zvinosvika pamuganho wesimba rekugara, ndiko kuti, pakuverenga, zvakanyanya simba rose rekugara remeso ese ari maviri rinofanira kushandiswa, zvekuti hazvigoneke kushandisa maziso kwenguva yakareba, uye zviri nyore kwazvo kukonzera kuzvimba kweziso nekuda kwekugadzirisa zvakanyanya. , musoro uye zvimwe zviratidzo zvekuneta kwekuona.

Kuitika kwemamiriro maviri ari pamusoro apa kunoratidza kuti maziso anogona kuchembera zvishoma nezvishoma. Kune mapoka emamyopic, zvakakosha kubvisa magirazi emyopic kana kugadzirisa bhuku rekuverenga kure paunenge uchiverenga pakatarisana, iyo iriwo kuratidzwa kukuru kwe presbyopia. Mushure mekunge maziso maviri ari presbyopic, nzira yakachengeteka ndeyekupfeka magirazi ekuverenga akakodzera kuti aenzanise.