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相关概念视频

Anatomy of the Eyeball01:20

Anatomy of the Eyeball

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The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
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The Retina01:32

The Retina

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The retina is a layer of nervous tissue at the back of the eye that transduces light into neural signals. This process, called phototransduction, is carried out by rod and cone photoreceptor cells in the back of the retina.
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Color Vision01:24

Color Vision

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Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
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相关实验视频

Updated: Mar 16, 2026

Multifocal Electroretinograms
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Multifocal Electroretinograms

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针对L和M圆的全球闪光多焦电网红图:概念化和开发.

Nandini Ravi1,2, Henry H L Chan3,4,5,6

  • 1Laboratory of Experimental Optometry (Neuroscience), School of Optometry, The Hong Kong Polytechnic University, 11 Yuk Choi Road, Hung Hom, Kowloon, Hong Kong, China.

Documenta ophthalmologica. Advances in ophthalmology
|March 14, 2026
PubMed
概括

这项研究开发了一种新的L和M圆定向的全球闪光多焦点电网膜图 (mfERG) 来评估视网膜功能. 新的mfERG方法显示了评估相关疾病和色彩视觉的潜力.

关键词:
形光感受器 形光感受器L/M 圆响应比率 圆响应比率这是一个LED刺激器.多焦点ERG是什么意思沉默的替换是一种沉默的替代.

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Using the Electroretinogram to Assess Function in the Rodent Retina and the Protective Effects of Remote Limb Ischemic Preconditioning
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Simultaneous ex vivo Functional Testing of Two Retinas by in vivo Electroretinogram System
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Simultaneous ex vivo Functional Testing of Two Retinas by in vivo Electroretinogram System

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相关实验视频

Last Updated: Mar 16, 2026

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Using the Electroretinogram to Assess Function in the Rodent Retina and the Protective Effects of Remote Limb Ischemic Preconditioning
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Simultaneous ex vivo Functional Testing of Two Retinas by in vivo Electroretinogram System
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科学领域:

  • 眼科医生 眼科 眼科
  • 神经科学是一个神经科学.
  • 视觉科学 视觉科学

背景情况:

  • 多焦点电网膜图 (mfERG) 对于研究光受体通路至关重要.
  • 全球闪光 mfERG (MOFO mfERG) 评估了视网膜外部和内部的反应.
  • 在MOFO mfERG中沉默替代刺激的整合尚未被探索.

研究的目的:

  • 开发一个L-和M-圆定向的全球闪光 mfERG.
  • 结合静音替代刺激来增强型特异性.
  • 评估特定型的视网膜反应.

主要方法:

  • 为LED显示器创建了一个无声的替代刺激.
  • 开发了以L和M形为导向的MOFO mfERG,并进行了19-六角刺激.
  • 在36名中国成年人中进行了测试,并使用模拟色彩视觉缺陷进行了验证.

主要成果:

  • 数学验证证实了准确的圆量子捕获.
  • 模拟的前视/后视显示显著的幅度减少 (p<0.05).
  • M-圆反应比L-圆反应更快,幅度更高 (p<0.001).

结论:

  • 开发了L和M圆定向的全球闪光 mfERG协议.
  • 这些协议提供了详细的洞察,了解型特异性视网膜反应.
  • 在诊断相关疾病和评估色彩视力的潜在实用性.