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Glaucomaischaracterizedbyaprogressivede-fectofvisualfield,ana1terationinappearanceofopticnerveheadandalossretinaganglioncells.Themechanismsmediatinggang1ionsandtheirfiberslossarenotclear-Mechanicalpowerofin-traocularpressure(IOP)isnottheonlyfactortocausethedamagebecausethereisaprogressivelosingofvisualfie1dinmanycasesafterIOPbeingloweredtonormalrange".'>.Alotofdatashowthatdecreasedbloodsupplyofretinabecauseofel-evatedIoParethemainfactorsthatleadtoretinaandopticnervedamageaswellasvisualfield… 相似文献
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