低视力儿童的对比敏感性和低对比视力敏度
Deepak Kumar Bagga1, Anantha A G Padmanabhan1, Deiva Jayaraman1
1Institute for Vision Rehabilitation, L V Prasad Eye Institute, Hyderabad, India.
Investigative ophthalmology & visual science
|February 19, 2026
概括
对比度敏感度和低对比度视力敏度在视力低下的儿童中差异很大. 临床上有意义的变化超过0.45logCS或0.4logMAR,这是由于高的测试-重新测试可变性.
科学领域:
- 眼科医生 眼科 眼科
- 儿科视力 儿科视力 儿科视力
- 低视力研究研究 低视力研究
背景情况:
- 儿童的低视力在视觉功能评估中存在重大挑战.
- 了解对比度敏感性 (CS) 和低对比度视力敏度 (LCVA) 对于治疗儿科视力障碍至关重要.
研究的目的:
- 在儿童 (5至<16岁) 患有各种眼睛疾病的低视力中调查远距离和近距离对比敏感性 (CS) 和低对比视力敏度 (LCVA).
- 评估这些视觉功能测量的可重复性在儿科低视力患者群体.
主要方法:
- 招募了782名视力低下的儿童 (视力敏度0.3-1.3 logMAR或视野MD差于12dB).
- 通过佩利-罗布森测试和5%和2.5%的LCVAs评估的CS与LEA符号形成对比.
- 在134名儿童中通过在3个月内使用Bland-Altman 95%一致限 (LoAs) 进行重复测量,评估了重复性.
主要成果:
- 在47种眼病中观察到广泛的CS (距离:1.69-0.45logCS,近距离:1.73 - 0.15logCS) 和LCVA (0.80-1.54logMAR在5%的对比度,0.94-1.58logMAR在2.5%的对比度).
- 发现了显著的测试-重复测试变异性:LoAs为0.44 logCS (距离),0.54 logCS (近距离),0.38 logMAR (5% LCVA) 和0.42 logMAR (2.5% LCVA).
结论:
- 对比度敏感性和LCVA障碍在患有导致视力低下的不同眼病的儿童中具有很高的变化.
- 在后续评估中应考虑CS (>0.45 logCS) 或LCVA (>0.4 logMAR) 的临床上有意义的变化,因为测试-重试的可变性很大.
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