1. Ukurikije imyanya ihamye yinteguza yimbere mu jisho, irashobora kugabanywamo ibice byimbere byimbere hamwe nicyumba cyinyuma cyimbere.Icyumba cy'imbere imbere (IOL) gikunze gushyirwa mu cyumba cy'inyuma kubera ibibazo byinshi nyuma yo kubagwa.
2.Gushyira mu byiciro ukurikije ibikoresho by'intangangore
A. Polymethylmethacrylate (PMMA): polymethylmethacrylate nigikoresho cya mbere gikoreshwa mugukora lens intraocular.Nibikoresho byatoranijwe kubintu bikomeye.Ifite imikorere ihamye, uburemere bworoshye, gukorera mu mucyo, kandi ntizitesha agaciro reaction ya biologiya oxyde yumubiri.Igipimo cyo kugabanya ni 1.49.Ikibi ni uko idashobora guhangana n'ubushyuhe bwo hejuru hamwe no kwanduza umuvuduko mwinshi.Kugeza ubu, gaze ya Ethylene ikoreshwa cyane mu kwanduza indwara, kandi ihinduka ryayo ni rito.Hariho ubwoko bubiri bwo gukoresha amavuriro: bumwe ni lens intraocular lens cast hanyuma ugakanda hamwe nibikoresho bya PMMA icyarimwe, byitwa igice kimwe;Icya kabiri, lens optique igice gikozwe muri PMMA, naho loop yo gushyigikira ikozwe muri polypropilene, yitwa ibice bitatu.
B. Gel ya silicon: ni ibikoresho byingenzi byinzira zoroheje zo mu nda, hamwe nubushyuhe bwiza bwumuriro, kwanduza umuvuduko ukabije wangiza, imiterere ya molekile ihamye, kurwanya gusaza neza, biocompatibilité nziza, ubworoherane na elastique.Irashobora guterwa hifashishijwe uduce duto.Igipimo cyangiritse kuva kuri 1.41 kugeza 1.46.Ibibi ni ubukana bubi, guhinduka muburyo bwa mashini, byoroshye kubyara ingufu za electrostatike kandi byoroshye kwakira ibintu byamahanga.
C. Hydrogel: poly (hydroxyethyl methacrylate) ni hydrophilique, ifite amazi ya 38% - 55%, agera kuri 60%, ituze ryiza, biocompatibilité nziza, kurwanya ubushyuhe bwinshi no gukomera.Lens y'imbere irashobora kubura umwuma no guterwa.Nyuma ya rehidrasiyo, ubworoherane bwayo buragarurwa kandi uburebure bwumurongo bwiyongereyeho 15%.Kubera ko ikungahaye ku mazi, metabolite yo mu nda irashobora kwinjira imbere kandi ikumira umwanda, bikagira ingaruka ku mucyo.
D. Acrylate: ni kopolymer igizwe na fenilethyl acrylate na acide ya methacrylic acide.Ifite optique na biologiya iranga PMMA, ariko kandi ifite ubwitonzi.Indangantego yo kuvunika ni 1.51, intanga zo mu nda ni ntoya, kandi intanga zifunze zirashobora kwaguka byoroshye kandi buhoro.
Igihe cyo kohereza: Kanama-26-2022
