最初的视神经头毛细血管密度损失的速度和视野进展的风险
Natchada Tansuebchueasai1,2, Takashi Nishida1, Sasan Moghimi1
1Hamilton Glaucoma Center, Shiley Eye Institute, Viterbi Family Department of Ophthalmology, University of California, San Diego, La Jolla.
JAMA ophthalmology
|May 2, 2024
概括
视神经头毛细血管密度的快速损失,通过OCTA测量,表明青光眼视野进展的风险更高. 这一发现支持使用OCTA进行青光眼风险评估.
科学领域:
- 眼科医生 眼科 眼科
- 医疗成像医学成像
- 玻璃眼研究研究 玻璃眼研究
背景情况:
- 玻璃眼是导致不可逆转失明的主要原因.
- 早期检测和风险评估眼的进展对于及时干预至关重要.
- 视神经头部 (ONH) 微血管系统的变化可能在视野损失之前或伴随着视野损失.
研究的目的:
- 通过光学相干断层扫描血管学 (OCTA) 评估的初始视觉神经头毛细血管密度损失率与绿眼镜患者视野缺陷的进展之间的关联.
- 为了确定OCTA衍生的指标是否可以作为大眼视野进展的预测标记.
主要方法:
- 一项追溯纵向队列研究,涉及109名患有绿眼病或疑似绿眼病的患者的167只眼睛.
- 视神经头毛细管密度损失率是从初始的OCTA扫描中计算出来的,平均随访时间为5.7年.
- 使用统计模型评估与视野进展的关联,根据毛细血管密度损失的中位数,将眼睛分为快速和缓慢的进展组.
主要成果:
- 与进展缓慢的眼睛相比,被归类为快速进展的眼睛显示了明显更高的视神经头毛细血管密度损失率 (-1.17%/年) (-0.45%/年).
- 快速OCTA进展者经历了更加速的视野损失 (-0.18dB/年),并且视野进展的风险几乎翻了一番 (HR,1.96).
- 从OCT扫描中获得的视网膜神经纤维层稀释率也观察到类似的关联.
结论:
- 通过OCTA测量,快速的初始视神经头毛细血管密度损失与眼中视野进展的更快速度显著相关.
- 这些发现表明,OCTA对ONH毛细血管密度的测量可以成为在临床实践中评估青光眼进展风险的有价值工具.
- 整合OCTA和OCT数据可能会提高青光眼风险分层和管理策略的准确性.
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