1.Maererano nenzvimbo yakagadziriswa ye-intraocular lens muziso, inogona kugoverwa kuva anterior chamber intraocular lens uye posterior chamber intraocular lens.Anterior chamber intraocular lens (IOL) inowanzoiswa mumashure mekamuri nekuda kwematambudziko akawanda epashure.
2.Kuronga maererano nenyaya ye intraocular lens
A. Polymethylmethacrylate (PMMA): polymethylmethacrylate ndiyo yekutanga inoshandiswa kugadzira intraocular lens.Icho chinhu chinosarudzirwa kune yakaoma intraocular lens.Iine kuita kwakagadzikana, huremu huremu, kujeka kwakanaka, uye haizodzikisirwe neiyo biological oxidation reaction yemuviri.Iyo refractive index ndeye 1.49.Izvo zvisingabatsiri ndezvokuti hazvipikisane nekushisa kwepamusoro uye high pressure disinfection.Parizvino, ethylene oxide gasi inonyanya kushandiswa kuuraya utachiona, uye kuchinjika kwayo hakuna kunaka.Kune marudzi maviri ekushandiswa kwekiriniki: imwe intraocular lens yakakandwa uye yakatsikirirwa nePMMA zvinhu panguva imwe chete, iyo inonzi chidimbu chimwe;Chechipiri, iyo lens optical chikamu inogadzirwa nePMMA, uye iyo inotsigira loop inogadzirwa ne polypropylene, iyo inonzi zvidimbu zvitatu.
B. Silicon gel: ndiyo chinhu chikuru chesoft intraocular lens, ine yakanaka thermal stability, high-pressure boiling disinfection, yakagadzika molecular structure, yakanaka kuchembera kuramba, biocompatibility yakanaka, softness uye elasticity.Inogona kuiswa kuburikidza nekucheka kuduku.Refractive index kubva 1.41 kusvika 1.46.Izvo zvisingabatsiri kusimba kwakashata, kusiyanisa pasi pesimba remagetsi, nyore kugadzira electrostatic effect uye nyore kutora zvinhu zvekunze.
C. Hydrogel: poly (hydroxyethyl methacrylate) inonzi hydrophilic material, ine mvura inokwana 38% - 55%, kusvika ku60%, kugadzikana kwakanaka, biocompatibility yakanaka, kupisa kwekushisa kwepamusoro uye kuoma kukuru.Iyo intraocular lens inogona kupera mvura uye kuiswa.Mushure mekudzorerazve mvura, hunyoro hwayo hunodzorerwa uye urefu hwayo hwemutsara hunowedzerwa ne15%.Nekuda kwekuti yakapfuma mukupinda kwemvura, intraocular metabolites inogona kupinda mukati uye inonamatira kusvibiswa, inokanganisa kujeka.
D. Acrylate: iri copolymer inoumbwa ne phenylethyl acrylate uye phenylethyl methacrylic acid.Iyo ine yakafanana optical uye biological maitiro sePMMA, asiwo ine hunyoro.Iyo refractive index ndeye 1.51, iyo intraocular lens itete, uye yakapetwa intraocular lens inogona kuwedzera yakapfava uye zvishoma nezvishoma.
Nguva yekutumira: Aug-26-2022
