Mukati
Nekuvandudzwa kwekeratoconus munhanho yekutanga, zvinokwanisika kugadzirisa matambudziko ekuona neakajairwa kuonana lenzi. Asi pane imwe nguva inotevera, kusarudzwa kweiyo chaiyo, keratoconus lenses inodiwa.
Keratoconus inoitika semugumisiro we dystrophic process mu cornea, iyo inotungamirira pakuonda kwayo, kuumbwa kwekoni-shaped protrusion. Kunyange zvazvo chirwere chacho pachacho chave chichitsanangurwa kwenguva yakareba, chikonzero chaicho chekukura kwayo hachina kusimbiswa kusvika nhasi, uye mushure mokunge kuongororwa kwaitwa, zvakaoma kuziva kuti chii chichava.
Kuratidzira kunoitika pazera diki, kazhinji pamakore 15-25, kukura kunogoneka zvese nekukurumidza uye kunonoka, dzimwe nguva chirwere chinonyangarika chega, asi mune dzimwe nguva kufambira mberi kunoitika ne deformation ye cornea.
Pakati pezvichemo zvakakosha, panogona kuva nekuona kaviri, zviratidzo zvemyopia, izvo zvinova chikonzero chekusarudzwa kwegirazi kana lenzi, asi vanobatsira kwenguva pfupi uye vanoratidza chikonzero chechokwadi chechirwere mu topography ye cornea.
Chaizvoizvo, ne keratoconus, myopia kana astigmatism inoitika, iyo inosanganiswa nekuchinja kwe curvature ye cornea, asi magirazi emhando kana magirazi anova "maduku" mukati megore risingasviki nekuda kwekufambira mberi kwehutano hwemaziso.
Ndinogona kupfeka lenzi ne keratoconus?
Zvakakosha kusimbisa kuti kushandiswa kwemagirazi kana lenzi mukugadzirwa kwekeratoconus hakubatsiri mukurapa kwechirwere. Zvigadzirwa zveOptical zvinongobatsira kutsiva zvikanganiso zviripo zvekuona, asi chirwere pachacho chinogona kuenderera mberi.
Magirazi ekugadziriswa kweanoona pathologies kunopesana nemashure keratoconus haawanzo shandiswa, haagone kubvisa zvachose kukanganisa. Kubata lenses kunopindirana nepamusoro pe cornea, uye naizvozvo kubatsira mukubvisa kukanganiswa kwekuona.
Ndeapi lenzi akanakira keratoconus?
Soft standard lenses inogona kushandiswa chete muchikamu chekutanga chechirwere, kana refractive shanduko inosvika 2,5 diopters. Zvadaro, chiono chakajeka chinogona kuwanikwa nekushandisa toric dhizaini lens. Uye zvakare, zvinodikanwa kusarudza mamodheru ane silico-hydrogel zvinhu, nekuda kwekukwira kwavo gasi permeability.
Muchikamu chekupedzisira chechirwere, ma lens akasarudzika keratoconus anoshandiswa, anogadzirwa chete kurongeka zvichienderana nekukura kweiyo cornea. Dzinogona kunge dzakapfava kana dzakaoma kana dzakasanganiswa.
Ndeupi mutsauko uripo pakati pe keratoconus lenzi uye yenguva dzose lenzi?
Kusarudzwa kwema lens kune varwere vane keratoconus kunofanira kungoitwa neophthalmologist. Izvo zvichaitwa mumwe nemumwe, zvichienderana nehukuru hwe cornea. Kana izvi zviri zvinyoro zvigadzirwa zvinoitwa mumwe nemumwe, zvakakamurwa kuita mapoka maviri:
- axisymmetric, ine kukora mukati - ma lens aya anogona kugadzirisa myopia, asi haakwanisi kubvisa astigmatism, akakodzera chete keratoconus, umo cornea isingakuvadzi pakati pepakati pane periphery;
- toric lenses ichabatsira ne astigmatism, kunyanya nedhigirii yayo yakakwirira.
Kana aya ari malenzi akaoma, akapatsanurwa nehukuru uye akakamurwa kuita mapoka maviri:
- ine dhayamita diki (kusvika 10 mm), corneal - kazhinji kazhinji mapeya akati wandei emalenzi eakasiyana magadzirirwo anogadzirwa kuti arongedze, achivasarudzira zvakanyanya kupfeka kunyaradza.
- nehukuru hukuru (kubva pa13,5 mm kana kupfuura), corneoscleral kana scleral, zvigadzirwa zvinopinda negasi izvo, kana zvasakara, zvinozorora pa sclera pasina kubata nzvimbo yeuXNUMXbuXNUMXb keratoconus pachayo - yakanyanya kugadzikana, asi zvakanyanya kuoma. kusarudza.
Zvigadzirwa zveHybrid musanganiswa wemapoka maviri apfuura. Chikamu chavo chepakati chakagadzirwa neoxygen-permeable material, asi padivi pacho dzakapfava, dzakagadzirwa nesilicone hydrogel. Aya lenzi akasununguka, akanyatsogadziriswa pacornea, anopa kururamisa kwemhando yepamusoro, asi haagone kushandiswa kana cornea yakaoma.
Ongororo yevanachiremba nezve lens ye keratoconus
"Tichifunga nezve astigmatism yakaoma inoperekedza keratoconus, sekutonga, kururamisa kubata inova sarudzo yekuwana yakanakisa kuona acuity," anodaro. ophthalmologist Maxim Kolomeytsev. - Nguva uye kuwanda kwekutsiva lens kunogona kusiyanisa zvakanyanya zvichienderana nerudzi rwelens yakasarudzwa (soft contact lens kana rigid gasi permeable lenses) uye chiyero chekufambira mberi kwechirwere.
Mibvunzo nemhinduro dzakakurumbira
Takataura naye ophthalmologist Maxim Kolomeytsev nezve dambudziko re keratoconus uye kururamisa lens mairi, yakajekesa mamwe nuances ekurapa.