1.E ai ki te waahi kua whakaritea o te arotahi intraocular i roto i te kanohi, ka taea te wehewehe ki roto i te ruma o mua o te ruma me te ruma o muri o te arotahi intraocular.He maha nga wa ka whakatohia te arotahi o roto o te ruma o mua (IOL) ki roto i te ruma o muri na te maha o nga raruraru i muri i te mahi.
2.Classification rite ki te rauemi o te arotahi intraocular
A. Polymethylmethacrylate (PMMA): ko te polymethylmethacrylate te mea tuatahi i whakamahia hei hanga i te arotahi intraocular.Koia te rauemi pai mo te arotahi intraocular pakeke.He pai te mahi, he maamaa te taumaha, he pai te maarama, kaore e paheketia e te tauhohenga koiora koiora o te tinana.Ko te taupū whakaata he 1.49.Ko te kino ko te kore e atete ki te teitei o te pāmahana me te pehanga teitei.I tenei wa, ko te hau ethylene oxide te nuinga e whakamahia ana mo te whakakore i te mate, a he ngoikore tona ngawari.E rua nga momo whakamahinga haumanu: ko tetahi ko te maka i roto i te kanohi ka pehia ki te rauemi PMMA i te wa kotahi, e kiia ana ko te waahanga kotahi;Tuarua, ko te wahanga whatu arotahi he mea hanga ki te PMMA, a ko te kopae tautoko he mea hanga ki te polypropylene, e kiia nei e toru nga wahanga.
B. Silicon gel: Ko reira te rauemi matua o te arotahi intraocular ngohengohe, ki te pūmautanga waiariki pai, teitei-pēhanga koropupū disinfection, hanganga rāpoi pūmau, te ātete hoholo pai, pai biocompatibility, ngohengohe me te elasticity.Ka taea te whakatō ma te wero iti.Ko te taupū whakaata mai i te 1.41 ki te 1.46.Ko nga ngoikoretanga he ngoikore te uaua, he rerekee i raro i te kaha miihini, he ngawari ki te whakaputa i te paanga hiko me te ngawari ki te whakauru i nga mea ke.
C. Hydrogel: poly (hydroxyethyl methacrylate) he rauemi hydrophilic, me te ihirangi wai o te 38% - 55%, tae atu ki te 60%, te pai o te pumau, te pai o te koiora, te kaha o te wera me te pakari nui.Ka taea te whakamaroke i te kanohi o roto o te kanohi me te whakato.I muri i te rehydration, ka hoki mai ano tona ngawari, ka piki ake te roa o te raina ma te 15%.Na te mea he nui te kaha o te wai, ka uru nga metabolites intraocular ki roto ka piri ki te parahanga, ka pa ki te maarama.
D. Acrylate: he copolymer i tito mai i te phenylethyl acrylate me te phenylethyl methacrylic acid.He rite tonu nga ahuatanga whatu me te koiora ki te PMMA, engari he ngawari ano.Ko te 1.51 te taupū whakaata, he kikokore te arotahi o roto o te kanohi, a ka taea e te arotahi intraocular takai te whakawhānui ngawari me te puhoi.
Wā tuku: Akuhata-26-2022
