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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
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相关实验视频

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Quantification of Vascular Parameters in Whole Mount Retinas of Mice with Non-Proliferative and Proliferative Retinopathies
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贫血视网膜病变的决定因素

Ramesh Venkatesh1, Nikitha Gurram Reddy1, Chaitra Jayadev1

  • 1Department of Retina and Vitreous, Narayana Nethralaya, Bangalore, India.

Beyoglu eye journal
|July 31, 2023
PubMed
概括
此摘要是机器生成的。

贫血会导致视网膜病变,这种疾病会影响视力. 低血红蛋白和血红素水平是这种风险的关键指标,建议贫血患者定期进行眼科检查.

关键词:
贫血 贫血 是一种疾病.贫血性视网膜病变是一种贫血性视网膜病变.血红蛋白 血红蛋白 是一个包装的细胞体积的容量.风险因素 风险因素

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科学领域:

  • 眼科医生 眼科 眼科
  • 血液学 血液学 血液学
  • 视网膜疾病 视网膜疾病

背景情况:

  • 贫血是一种红细胞数量低的特征,可以导致各种并发症.
  • 视网膜病变,视网膜中的血管损伤,是系统性疾病的潜在并发症.
  • 贫血和视网膜病变之间的关系需要进一步调查,以确定风险因素.

研究的目的:

  • 为了确定患有贫血的患者中 fundus 病变的患病率.
  • 确定与贫血视网膜病变 (AR) 相关的血液学风险因素.
  • 用接收器操作特征 (ROC) 曲线分析分析AR的血红蛋白和血红素水平的预测值.

主要方法:

  • 一项回顾性研究包括了被诊断患有贫血的成年患者,并接受扩张 fundus 检查.
  • 贫血视网膜病变的诊断是基于特定的 funduscopic 发现,如出血,罗斯斑点和排泄物.
  • 二次性贫血患者被排除在外,血液学参数与AR的存在或不存在相关.

主要成果:

  • 在30%的研究眼睛中观察到贫血视网膜病变.
  • 与没有AR的患者相比,AR患者的平均血红蛋白 (7.82±1.64 gm/dl) 和血红素 (26.93±5.22%) 水平显著降低.
  • 接收器操作特征 (ROC) 曲线分析表明,血红蛋白<8.95 g/dl和血红素<30.5%是AR的显著预测因素.

结论:

  • 视网膜病变是严重贫血患者的常见发现.
  • 低血红蛋白和血红素水平是发展贫血视网膜病变的重要危险因素.
  • 对于被诊断患有贫血的患者,特别是那些血液学参数较低的患者,建议定期进行视网膜检查.