Mumakore achangobva kupfuura, nyika inochengetedza maziso yakave yakashamiswa nezvirwere zvinopinda maziso. Nhengo dzekwangwani dzinovhenekera lensheni dzakawanda dzinogadzirisa gasi rinokonzerwa ( RGP) lenzi iyo isingorivha chete nekroma asi inowedzera kuti ifukidze chikamu chikuru chekatsva, chikamu chitsvene cheziso. Chimiro chinokonzerwa negasi yakavharidzirwa inonzi lens inosvika 9.0 mm muhupamhi. Majekisi ejoka anosiyana kubva pa14 kusvika pane 20 mm muhupamhi.
Kuwana kukwana kwakanaka kune rimwe rinokonzerwa negasi rinogadziriswa lens dzimwe nguva rakaoma nekuda kwekukanganiswa kwepanyama kwekornea. Kunyange zvakadaro, chirwere chinonzi scleral lens chinogara pachiganda pane nzvimbo, saka kuvhara kwemisoti kunotora basa shoma nenzira yakakodzera.
Batsiro reChikoro Contact Lenses
Shanduro inobata lenzi inowanzogadzikana kupfeka kudarika zviduku zviduku zveRGP. Iyo cornea izere nezviuru zvehutano hwehutano hunoita kuti huve nehanya zvikuru nemhepo. Nemhaka yokuti yakanyanyisa, vanhu vazhinji vanogona kunzwa vanowanzobatanidza lens sezvo ichifamba-famba paziso. A lens scleral rinonyanya kubatana ne conjunctiva uye sclera. Iko conjunctiva inonyanya kunzwisiswa kupfuura iyo cornea, inobudisa zvishoma kudhura uye kusagadzikana. Murefu anoona gasi rakaoma rinogona kuvharidzirwa lens risingakanganisiki anogona kukwanisa kupfeka ganda rinenge rakavhiringidza nyore nyore zvisingambofadzi.
Imwe rubatsiro yekupfeka chiremera chekushongedzwa kwemazimbe ndeye kukwanisa kwerineni kuti ibudise maonero akajeka.
Nemhaka yekuti chinonzi scleral lens haigere zvakananga pane cornea pachayo, kubvarura kwemvura inoshandiswa kunoitwa pasi pe lens. Iyi gungwa inoshanda kuchengetedza cornea uye inogona kuita sechimedu.
Uyewo, mamwe maziso, zvakadai sekeratoconus kana pellucid marginal degeneration, zvinokonzera kuti cornea ive isina kunyanyisa uye dzimwe nguva yakanyanyisa.
Nguva dzose lorneal lens inonetsa kuisa painorne cornea. Zvisinei, zvinenge zvisingabviri kuti ganda rinopinza rive rakanaka nokuti rinoputika kure kure nekromnea.
Vane Scleral Contact Lenses Vatsva here?
Zvinonakidza, iyo yekutanga yero lens inowanikwa mumakore ekuma1800 yekupedzisira yaive yakavhiringidza lenzi. Nzira yakakura yevhenekeri yemagetsi yakatarisana nayo pakuva nzira yakakurumbira yekugadzirisa maonero kana kushungurudzwa kweziso yaiva zvinhu. Aya majekisi ekutanga akaitwa mapurasitiki uye girazi uye haana kubvumira okisijeni kuti iyerere mukati kana kuti yakakomberedza lens kusvika ku cornea. Nokudaro, lenzi idzi dzakaitwa zviduku zvikuru uye dzakagadzirirwa kugara pamakorome chete. Zvisinei, idzi lenzi dzimwe nguva zvakakonzera kukanganisa kwakawanda kana kusagadzikana kune varwere vane maziso epamusoro. Zvakanga zvakaomawo kugadzira kukwana kwakakwana kunoda kukodzera cornea zvakanyatsonaka. Mazuva ano teknolojia yekombiyuta yakashandura iyi yekugadzira uye kugadzira nzira.
Zvaunofanira Kuziva
Kana iwe ukasarudza kuedza scleral contact lens, chiremba wako weziso achada kuita chiremba chekuona maziso. Munguva yekuongorora, makombiyuta emapuraneti anoona maziso ako achagadziridzwa uye mapikicha akajeka achatorwa nemaziso ako.
Iwe uchazofanirawo kutarisa zvakakwana zvinokonzera kuvhara lens zvakakodzera. Mushure mekutarisa lens parameters, kubudiswa kwemasvikiro ako angatanga. Mune zvimwe zviitiko, inshuwarisi yehutano hwemaziso inogona kuvhara mari yezvipembenene zvisinganyanyi kubatana. Kana iwe uri kukwana nemarangi aya kunze kwekurapa kwekurapa, bvunza chiremba weziso rako kuti abvunze kana inishuwarenzi yako inobatanidza unyanzvi hwekutengesa lens zvakakodzera uye zvinhu.
> Kwakabva:
> Van der Worp, E. Nhungamiro yezvipembenene Lens Kukodzera. Scleral Lens Education Society; 2010.