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房水静脉检查及意义

Ophthalmology in China(2019)

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Abstract
房水静脉系位于角膜缘的由深层巩膜穿出的内含透明液体的血管结构.其起始段充满透明房水,向远端汇入充满血液的上巩膜静脉.裂隙灯显微镜下每眼通常可观察到2-3支.房水静脉压迫试验表现为四级:玻璃棒压迫时房水充盈增多(Ⅰ级);玻璃棒压迫时血液逆充盈,去除压迫后房水充盈增多(Ⅱ级);玻璃棒压迫时及去除压迫后均出现血液逆充盈(Ⅲ级);玻璃棒压迫及去除压迫后房水静脉内液体状态无变化(Ⅳ级).房水静脉压迫试验分级有助于评价青光眼患者房水流出通路病变部位和程度,辅助以微导管为工具的青光眼微创手术的术式选择.
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