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相关概念视频

Photoreceptors and Visual Pathways01:22

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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

Updated: Jun 10, 2025

Partial Optic Nerve Transection in Rats: A Model Established with a New Operative Approach to Assess Secondary Degeneration of Retinal Ganglion Cells
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视神经低成形 - 病例报告

Jan Lestak1, Lenka Prazakova1, Martin Fus1

  • 1Faculty of Biomedical Engineering, Czech Technical University in Prague, Kladno, 272 01, Czech Republic.

International medical case reports journal
|October 14, 2024
PubMed
概括
此摘要是机器生成的。

光学囊低成形,一种导致视野狭窄的疾病,可能会微妙地出现. 本案例报告强调了成像和电生理学测试如何有助于诊断这种罕见的视神经疾病.

关键词:
电生理学检查 电生理学检查图像制造方法 图像制造方法视神经过度增生 视神经过度增生视野 视野 视野 视野 视野

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科学领域:

  • 眼科医生 眼科 眼科
  • 神经眼科神经眼科
  • 医疗成像医学成像

背景情况:

  • 光学膜低成形 (OCHH) 是一种先天性疾病,其特征是光学膜发育不良.
  • OCHH可能导致各种视力障碍,包括视野缺陷和视力敏度降低.
  • 由于可能微妙或缺少形态和功能表现,诊断可能具有挑战性.

研究的目的:

  • 介绍一个年轻近视患者的病例报告,诊断出双边同心视野收窄.
  • 调查疑似OCHH的多式成像和电生理学评估的诊断实用性.
  • 强调OCHH综合诊断方法的重要性.

主要方法:

  • 一个年轻的近视患者的案例介绍,视野狭窄.
  • 眼科检查包括 funduscopy 和光学连贯性断层扫描 (OCT).
  • 电生理学测试:图案电网膜学 (PERG) 和视觉唤起潜能 (PVEP).
  • 大脑的磁共振成像 (MRI) 来评估光学.

主要成果:

  • 患者呈现出双边同心的视野缩小 (15-20度).
  • OCT显示了视网膜神经纤维层的损失和垂直象限的干细胞复合体的减少.
  • PERG反应正常;PVEP显示幅度降低与正常延迟.
  • 大脑MRI显示光学的缩小,与OCHH一致.

结论:

  • 光学膜低成形可以呈现非特异性视野缺陷和微妙的OCT发现.
  • 电生理学检查,特别是PVEP,可以在诊断OCHH时提供有价值的功能数据.
  • 综合成像和电生理学的多式诊断策略对于验证OCHH至关重要.