1. E like me ke kūlana paʻa o ka lens intraocular i ka maka, hiki ke hoʻokaʻawale ʻia i ke keʻena mua intraocular lens a me ke keʻena hope intraocular lens.Hoʻokomo pinepine ʻia ka lens intraocular chamber mua (IOL) i loko o ke keʻena hope no ka nui o nā pilikia postoperative.
2.Classification e like me ka mea o intraocular lens
A. Polymethylmethacrylate (PMMA): polymethylmethacrylate ka mea mua i hoʻohana ʻia no ka hana ʻana i nā lens intraocular.ʻO ia ka mea makemake no ka lens intraocular paʻakikī.Loaʻa iā ia ka hana paʻa, ke kaumaha māmā, ka ʻike maikaʻi, a ʻaʻole e hoʻohaʻahaʻa ʻia e ka hopena oxidation biological o ke kino.ʻO ka index refractive he 1.49.ʻO ka hemahema ʻo ia ʻaʻole kūʻē i ka wela kiʻekiʻe a me ka disinfection kiʻekiʻe.I kēia manawa, hoʻohana nui ʻia ke kinoea ethylene oxide no ka disinfection, a ʻilihune kona maʻalahi.ʻElua ʻano o ka hoʻohana lāʻau lapaʻau: ʻo ka lens intraocular lens i hoʻolei ʻia a kaomi ʻia me ka mea PMMA i ka manawa hoʻokahi, i kapa ʻia he ʻāpana;ʻO ka lua, ua hana ʻia ka ʻāpana optical lens me ka PMMA, a ua hana ʻia ka loop loop i polypropylene, i kapa ʻia ʻekolu ʻāpana.
B. Silicon gel: ʻo ia ka mea nui o ka lens intraocular palupalu, me ke kūpaʻa wela maikaʻi, ka disinfection paila kiʻekiʻe, ka molecular paʻa, ke kūpaʻa ʻelemakule maikaʻi, biocompatibility maikaʻi, palupalu a me ka elasticity.Hiki ke hoʻokomo ʻia ma o ka ʻoki liʻiliʻi.ʻO ka helu refractive mai ka 1.41 a i ka 1.46.ʻO nā hemahema he paʻakikī maikaʻi ʻole, ʻano like ʻole ma lalo o ka ikaika mechanical, maʻalahi e hana i ka hopena electrostatic a maʻalahi ke komo i nā mea ʻē aʻe.
C. Hydrogel: poly (hydroxyethyl methacrylate) he mea hydrophilic, me ka wai o 38% - 55%, a hiki i ka 60%, kūpaʻa maikaʻi, biocompatibility maikaʻi, ke kūpaʻa wela kiʻekiʻe a me ka paʻakikī nui.Hiki ke maloʻo a hoʻokomo ʻia ka lens intraocular.Ma hope o ka rehydration, hoʻihoʻi ʻia kona palupalu a hoʻonui ʻia kona lōʻihi laina e 15%.No ka mea he waiwai i ka wai permeability, intraocular metabolites hiki ke komo i loko a pili i ka pollution, e pili ana i ka ʻike.
D. Acrylate: he copolymer i haku ʻia me ka phenylethyl acrylate a me ka phenylethyl methacrylic acid.Loaʻa iā ia nā hiʻohiʻona optical a me ka biological e like me PMMA, akā he palupalu nō hoʻi.ʻO ka index refractive he 1.51, lahilahi ka lens intraocular, a hiki i ka lens intraocular i pelu ʻia ke hoʻonui mālie a mālie.
Ka manawa hoʻouna: ʻAukake-26-2022
