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Observation of the peripapillary watershed zones in glaucoma by indocyanine green angiography
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF OCULAR FUNDUS DISEASES
- Issue:
- 4
- DOI:
- 10.3760/j.issn:1005-1015.2004.04.006
- Key Word:
- 吲哚花青绿/诊断应用;青光眼
Abstract： 目的观察青光眼患者吲哚青绿血管造影(ICGA)中盘周脉络膜血液供应分水带与视盘的相对位置关系,探讨青光眼视神经病变的发病机制. 方法对青光眼患者31例31只眼和对照组37例37只眼进行ICGA和荧光素眼底血管造影(FFA)同步检查.青光眼患者中原发性开角型青光眼(POAG)17例17只眼、正常眼压性青光眼(NTG)14例14只眼.对比分析30 s内的ICGA和FFA图像,根据分水带与视盘的相对位置关系,将分水带分为3型.Ⅰ型:分水带不包围视盘或未被观察到;Ⅱ型:分水带部分包围视盘;Ⅲ型:分水带完全包围视盘.并根据分水带类型记分(Ⅰ型=1;Ⅱ型=2;Ⅲ型=3). 结果 87.1%的青光眼患者的分水带全部或部分包围视盘,而在对照组中仅为56.8%的分水带全部或部分包围视盘,二者比较差异有非常显著性的意义(χ2=7.369;P=0.007).青光眼组的分值显著大于对照组(t=3.001,P=0.004). 结论青光眼患者的盘周脉络膜分水带的位置较正常眼更多地包围视盘,提示青光眼视神经病变的发病机制可能与盘周脉络膜血液供应状态有关.
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