1.Marka loo eego booska go'an ee lenska intraocular ee isha, waxaa loo qaybin karaa qolka hore ee lenska intraocular iyo qolka dambe ee lenska intraocular.Lenska indhaha ee hore (IOL) ayaa inta badan lagu dhex beeraa qolka dambe sababtoo ah dhibaatooyin badan oo qalliinka kadib.
2.Classification iyadoo loo eegayo walxaha muraayadda indhaha
A. Polymethylmethacrylate (PMMA): polymethylmethacrylate waa shayga ugu horreeya ee loo isticmaalo in lagu sameeyo muraayadaha indhaha.Waa maaddada la door bidayo ee lensada indhaha ee adag.Waxay leedahay waxqabad xasilloon, miisaan fudud, daahfurnaan wanaagsan, mana hoos u dhigi doonto falcelinta oksaydhka nafleyda ee jirka.Tilmaanta refractive waa 1.49.Khasaaraha ayaa ah in aysan u adkaysan karin heerkulka sare iyo jeermiska cadaadiska sarreeya.Waqtigan xaadirka ah, gaaska ethylene oxide ayaa inta badan loo isticmaalaa jeermiska jeermiska, dabacsanaantiisuna waa mid liidata.Waxaa jira laba nooc oo isticmaalka bukaan-socod: mid waa muraayadda indhaha ee indhaha oo lagu riixo walxaha PMMA hal mar, kaas oo loo yaqaan hal gabal;Marka labaad, qaybta indhaha ee lensku waxay ka samaysan tahay PMMA, iyo wareegga taageerada wuxuu ka samaysan yahay polypropylene, oo loo yaqaan saddex qaybood.
B. Silicon gel: waa maaddada ugu muhiimsan ee lenska intraocular jilicsan, oo leh xasilooni kulayl wanaagsan, jeermiska karkarinta cadaadiska sare, qaabdhismeedka molecular deggan, caabbinta gabowga wanaagsan, biocompatibility wanaagsan, jilicsanaanta iyo dabacsanaanta.Waxa lagu beeri karaa jeex yar.Tusmada dib-u-celinta waxay u dhaxaysay 1.41 ilaa 1.46.Khasaarooyinku waa adag tahay liidata, kala duwanaanshiyaha xoogga farsamada, fududahay in la soo saaro saameynta korantada iyo si sahlan loo nuugo arrimaha shisheeye.
C. Hydrogel: poly (hydroxyethyl methacrylate) waa maaddada hydrophilic, oo leh maadada biyaha ee 38% - 55%, ilaa 60%, xasilooni wanaagsan, biocompatibility wanaagsan, caabbinta heerkulka sare iyo adagaanta weyn.Muraayada indhaha ee indhaha ayaa fuuqbaxa oo lagu dhejin karaa.fuuq-celinta ka dib, jilicsanaantiisa ayaa dib loo soo celiyaa oo dhererkeeda toosan ayaa kordhay 15%.Sababtoo ah waxay qani ku tahay qulqulka biyaha, dheef-shiid kiimikaad ee indhaha waxay geli karaan gudaha gudaha waxayna u hoggaansamaan wasakhowga, saameynaya daahfurnaanta.
D. Acrylate: waa copolymer ka kooban phenylethyl acrylate iyo phenylethyl methacrylic acid.Waxay leedahay astaamo la mid ah indhaha iyo bayooloji sida PMMA, laakiin sidoo kale waxay leedahay jilicsanaan.Tusmada dib-u-celinta waa 1.51, muraayadda intraocular waa dhuuban, muraayadda isku laabma ee indhaha ayaa fidin karta jilicsan oo tartiib ah.
Waqtiga boostada: Agoosto-26-2022
