Astigmatism chirwere cheziso chakajairika, kazhinji chinokonzerwa nekoneal curvature.Astigmatism inonyanya kuumbwa nekuzvarwa, uye mune dzimwe nguva, astigmatism inogona kuitika kana chalazion yenguva refu ichimanikidza mboni yeziso kwenguva yakareba.Astigmatism, kufanana nemyopia, haigadziriswi.Kazhinji, astigmatism inopfuura 300 madhigirii inonzi yakakwira astigmatism.
Kune matambudziko mazhinji anoenderana neakakwira astigmatism magirazi, kunyanya kuvana nevechiri kuyaruka.Mubasa chairo, varapi vedu vemaziso vanowanzosangana nevanhu vane astigmatism yakakwira.Zvinonyanya kukosha kuti usarudze zvakakodzera lenzi uye mafuremu.
Kusiyana kwekufungidzira pakati pe astigmatism uye myopia
Chimiro checornea hachina kurongeka, kwete denderedzwa asi ellipsoidal.Iyo refractive simba munzira yakatwasuka uye yakachinjika kutungamira zvakasiyana.Somugumisiro, mushure mokunge chiedza chekunze chichigadziriswa ne-cornea, haigoni kuumba chinangwa kana ichipinda mukati meziso.Pane kudaro, inoumba mutsara wekutarisa, zvichiita kuti retina kuChiratidzo chisina kujeka, zvichikonzera kurasikirwa kwekuona.Matambudziko ane astigmatism, kunyanya astigmatism akapfava, anogona kunge asina simba guru pakuona, asi mazinga akakwirira eastigmatism achave nemhedzisiro pakuona.
Myopia inoitika apo chiedza chekunze chakafanana chinopinda mumboni yeziso uye chinodzorwa nehurongwa hweziso rekuona.Kutarisa kwechifananidzo hakugone kuwira pa retina, zvichikonzera dambudziko rekuona kwakasviba kure.Pane misiyano yakakosha mukufungidzira kwe myopia uye astigmatism, uye zvakare akasiyana zvakanyanya mune chaiyo yekuona maitiro.Vanhu vazhinji havana kunzwisisa kwakakwana kweizvi, zvichikonzera kuvhiringidzika.
Kune vashoma nhamba yevarwere vane nyore astigmatism, uye vazhinji vavo vane pedyo astigmatism kana kure astigmatism.Mukuita kweOptometry, zvinonyanya kukosha kupa zvigadziriso zvechiremba zvichibva pamusiyano wekufungidzira pakati peastigmatism uye myopia.
Tsanangudzo uye kuratidzwa kwepamusoro astigmatism
Kuoma kwe astigmatism kwakakamurwa zvichienderana nedhigirii.Astigmatism iri pasi pe150 madhigirii inyoro astigmatism, astigmatism iri pakati pe150 ne300 madhigirii ine mwero astigmatism, uye astigmatism inopfuura 300 madhigirii yakakwira astigmatism.Yakakwira astigmatism inogona kukonzera kukuvadza kwakawanda kumaziso edu:
1. Kukonzera misoro, maziso anorwadza, nezvimwewo: High astigmatism pasina kururamisa inowanzokonzera misoro, maziso anorwadza, nezvimwewo. Inogonawo kutungamirira nyore nyore kune zvakashata zvakadai sekurerekera musoro.Nokudaro, avo vane astigmatism yakaoma vanofanira kugadziriswa.
2. Kuneta kwekuona: Nekuda kwesimba rakasiyana refractive remeridian yega yega, astigmatism haigone kuumba tarisiro kana ichirevesa parallel light, asi mitsetse miviri yakatarisana, saka uropi hunoenderana nekusarudza kududzirwa kwezvinhu.Kuti uone kutaridzika kwakajeka, astigmatism inofanirwa kugadziridzwa zvakanyanya sezvinobvira kuderedza saizi yedenderedzwa rekupararira kuvandudza kunaka kwemufananidzo.High astigmatism, kana isina kugadziriswa zvakanaka kana isina magirazi, inogona kukonzera misoro, kuneta kwekuona uye zvimwe zviratidzo, zvichiita kuti zvive nyore kukudziridza kuneta kwekuona..
3. Kusaona zvakanaka kwezvinhu zviri pedyo uye zviri kure: Vanhu vane astigmatism yakakomba vanoona kusaona zvakanaka kwezvinhu zviri kure uye zviri pedyo.Varwere vanowanzova netsika yehafu-kuvhara maziso avo uye kutsvedza mukati memipundu kuti vaone zvinhu zvakajeka.zvakajeka.
4. Kurasika kwekuona: Mumaziso astigmatic, chinotariswa chiri kure nemutsara we retina chichava chakareruka muruvara, mipendero ichange isina kujeka, uye zvichave zvakaoma kuziva.Chiratidzo chichaderera, uye mumatambudziko akaoma, maonero maviri achaitika.Mukuwedzera kune physiological astigmatism, marudzi ese e astigmatism anogona kukonzera kurasikirwa kwekuona nyore.
5. Kudzvinyirirwa pamboni yeziso: Astigmatism inowanzogadziriswa nemagirazi akajairika kana malenzi.Kana kushungurudzwa uye chalazions paziso zvisingatarisirwi munguva, ivo vachadzvinyirira mboni yeziso kwenguva yakareba uye kukonzera astigmatism.Mune zvimwe zviitiko, astigmatism inogonawo kusanganiswa nepseudomyopia.Cherechedza kuti pseudomyopia chikamu chinoda kubviswa, uye astigmatism inogona kugadziriswa nemagirazi.
6. Amblyopia: Chirwere chacho chinowanzoitika mu astigmatism yakakwirira, kunyanya hyperopic astigmatism.Nokuti zvakaoma kuona kure uye pedyo zvakajeka, uye chiratidzo hachigone kushandiswa, amblyopia inowanzoitika, uye ipapo strabismus inowanzoita.
Yakanyanya astigmatic magirazi
Yakanyanya astigmatic lenses inonetsa kugadzira nekuda kwesimba rawo rakadzika.Naizvozvo, yakakwira astigmatism inogona kazhinji kuve yakashongedzerwa nepamusoro-refractive index resin lenzi uye aspherical dhizaini, kuitira kuti isaite seyakakora.Izvo zvinofanirwa kucherechedzwa kuti lenzi ane yakakwira astigmatism anowanzo gadziridzwa akateedzana malenzi.Iyo yakakwirira iyo astigmatism, iyo yakanyanya kuoma kugadzirisa, uye iyo yakanyanya kuomesesa paramita inoda kugadzirwa.Kune yakanyanya astigmatism, furemu paramita inodawo kupihwa kubatsira nekugadzira lens.
Paunosarudza mafuremu, iwe unofanirwawo kufunga nezve akakosha maitiro e-ultra-high astigmatism.Sezvo mupendero ukobvu hweastigmatism lenses hunosiyana zvakanyanya, iwe unofanirwa kungwarira zvakanyanya pakusarudza mafuremu.Sarudza yakachena titanium kana titanium alloy mafuremu ane madhayamita madiki akachinjika uye kusimba kwezvinhu.Iwe unogona zvakare kusarudza acetate fiber kana mapuranga emapuranga ane shrinkage yakanaka.wait.
Hazvikurudzirwe kusarudza mafuremu asina furemu kana hafu-furemu.Zviri nani kusarudza mafuremu akazara.Paunenge uchigadzira uye kugadzira, nyatso tarisa kune dambudziko rekutsauswa kwelens iyo inoshandura astigmatism axis yelens nekuda kwehurombo hwekukodzera tekinoroji uye yakagadziriswa michina.
Maitiro ekusarudza zvakanyanya astigmatic mafuremu:
A. Ipa zvakakosha kune zvinhu zvisingaremi
Huremu hwechifukidzo chinhu chimwe chezvinhu zvinokanganisa huremu hwemagirazi.Kune vanhu vane myopia yakakwira, pakusarudza mafuremu, unogona kubhadhara zvakanyanya kuzvinhu zvakaita seyakachena titanium, tungsten kabhoni, matete mapepa, uye TR90.Mafuremu akagadzirwa nezvinhu izvi kazhinji akareruka uye ari nyore kupfeka.Yakanyanya kugadzikana, yakasimba uye isiri nyore kuremara.
B.Full frame> Half frame> Frameless furemu
Yakakwira astigmatism kazhinji ine makobvu lenzi, uye isina rimless uye semi-rimless mafuremu anoburitsa malenzi, ayo asingangokanganisa chitarisiko chete, asi zvakare anoita kuti mafuremu ave nyore kukanganisa, zvichikonzera shanduko pakati pechinhambwe chegirazi uye astigmatism axis ye lenzi, inokanganisa kugadzirisa maitiro.Vanhu vane astigmatism yakakwirira vari nani pakusarudza mafuremu akazara.
C. Huru furemu haisi sarudzo yakanaka
Vanhu vanopfeka magirazi akakura-akagadzirwa kwenguva yakareba vanogona kuona kuderera kwekuona uye kupfupika kwenzvimbo yekuona.Kuapfeka kwenguva yakareba kunogona kukonzera dzungu uye dzungu.Magirazi mahombe-magirazi anowanzo kurema uye haana kukodzera vanhu vane myopia yakakwira.Kuvapfekedza kwenguva yakareba kuchaisa kudzvinyirira kwakanyanya pamhino, izvo zvinogona kutungamirira nyore kushanduka kwebhiriji remhino nekufamba kwenguva.
Kune akawanda akakosha ma paramita eOptometry uye magirazi, senge diopter uye interpupillary chinhambwe.Paunenge uchipfeka magirazi mahombe-mafuremu, iwe unofanirwa kunyatso kutarisisa kuti chinhambwe chinoenderana nepakati pemalenzi maviri chinoenderana nenzvimbo yechinhambwe chemboni yeziso rako.Kana pane kukanganisa, kunyange kana kunyorerwa kwemagirazi kwakarurama, iwe uchanzwa kusagadzikana mushure mekupfeka magirazi.Edza kusarudza furemu ine diki girazi upamhi, uye edza kuchengeta kumusoro uye kuderera kureba kudiki, kuitira kuti nyaradzo irege kuderedzwa nekuda kweperipheral deformation.
D. Sarudza furemu ine chinhambwe chiri pedyo pakati pemagirazi emaziso.
Chinhambwe cheziso-ziso (eye-eye distance) zvinoreva chinhambwe chiri pakati pe vertex yekumashure ye lenzi nemberi kwe cornea.Astigmatism kururamisa lenzi ma cylindrical lenzi.Kana ziso-ziso kureba richiwedzera, iro rinoshanda refractive simba richaderera (iyo yakakwirira dhigirii, iyo yakakura kuderedza), uye yakagadziridzwa chiono chichadererawo.kuderedza.Nharaunda pakati pemagirazi emaziso epamusoro astigmatic magirazi inofanira kuva shoma sezvinobvira.Panyaya yekusarudzwa kwechimiro uye chimiro chekugadzirisa, iwe unofanirwa kuyedza kusarudza mapedhi emhino kana lenzi ane chinhambwe chiri padyo pakati pemagirazi emaziso.
E. Usasarudza mafuremu ane temberi dzakanyanya kutetepa
Kana temberi dzakanyanya kutetepa, simba riri kumberi uye kumashure kwefuremu richave risina kuenzana, zvichiita kuti zvive nyore kuti furemu ive yepamusoro-inorema uye kuisa huremu hwakawanda pabhiriji remhino, zvichiita kuti magirazi atsvedze. pasi nyore uye kukanganisa kupfeka kunyaradza.Kana iwe uine astigmatism (kunyanya avo vane pakati nepamusoro astigmatism), pakusarudza magirazi, unofanirwa kusarudza mafuremu akakodzera kune interpupillary chinhambwe.
Kufurira kwe astigmatism axis chinzvimbo pamagirazi
Iyo astigmatism axis renji ndeye 1-180 madhigirii.Ini ndichatarisa pakusarudzwa kwemafuremu e180 uye 90 astigmatism axes.
Kutanga tinofanira kuziva kuti astigmatism axis iri pa 180 °, ipapo ukobvu huri pa 90 ° (yakananga nzira).Naizvozvo, kureba kwefuremu yatinosarudza haifaniri kunge yakakwira.Kana tikasarudza furemu ine yakaderera furemu, ukobvu munzira yakatwasuka inopera, uye mhedzisiro lenzi inozove yakareruka uye yakatetepa.(Kana furemu yacho yakakwira, inongove yakatenderedza; kana furemu iri yakaderera, inongoita yakaenzana.)
Pane zvinopesana, kana nzvimbo yeaxis iri makumi mapfumbamwe, ukobvu huchave 180 (yakatwasuka nzira).Kazhinji chikamu chedu chakakora chiri kunze, uye ukobvu hweastigmatism hunowedzerwa kunze, saka ukobvu hunowedzeredzwa.Naizvozvo, furemu inoda kuve diki uye yakatetepa, ndiko kuti, iyo padhuze huwandu hwehupamhi hwelenzi + yepakati danda hupamhi kune yako interpupillary chinhambwe, iyo yakatetepa.Izvo zvinodikanwa kusarudza yakakwirira index lens kuita kuti ukobvu husanyanya kuoneka.
Mukukodzera magirazi, "nyaradzo" uye "kujeka" zvinowanzopesana uye zvakaoma kuyananisa.Kupokana uku kunotonyanya kuoneka pamagirazi ane astigmatism.Kujeka kunoda kugadziriswa, asi kunyaradza hakurevi kujeka.Semuenzaniso, kusapfeka magirazi ndiko kwakanyanya kugadzikana, asi hazvina kujeka.
Magirazi ane astigmatism akanyanya kusimba uye anoda kunyatsotariswa muOptometry uye kunyorerwa.Paunenge uchisangana neastigmatism yakakwira, iwe unofanirwa kutarisisa kuenzanirana kwefuremu / lenzi neiyo astigmatism dhigirii uye axis chinzvimbo kudzivirira zvichemo zvevatengi uye kusagadzikana nekuda kwezvinetso zvechigadzirwa.
Nguva yekutumira: Nov-17-2023