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相关概念视频

Focusing of Light in the Eye01:16

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Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
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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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Determining Gender-Based Differences in Retinal and Choroidal Thickness in Underweight Individuals via Swept-Source Optical Coherence Tomography
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阿托皮性白内障中的透镜厚度:病例对照研究

Masanobu Iida1, Yoichiro Masuda, Kei Sano

  • 1From the Department of Ophthalmology, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan (Iida, Masuda, Sano, Ichihara, Komatsu, Nakano); Roppongi Shiba Eye Clinic, Minato-ku, Tokyo, Japan (Shiba); Iwaki Eye Clinic, Sumida-ku, Tokyo, Japan (Iwaki); Oki Eye Surgery Center, Toshima-ku, Tokyo, Japan (Oki); Department of Preventative Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan (Tatemichi).

Journal of cataract and refractive surgery
|June 5, 2023
PubMed
概括

与正常或非拓性白内障相比,阿托皮性白内障的眼睛具有更薄的透镜. 这种透镜变薄与前额外膜不透明度有关,这是阿托皮性白内障的常见特征.

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科学领域:

  • 眼科医生 眼科 眼科
  • 眼睛的生物识别技术

背景情况:

  • 阿托皮性白内障是一种特定类型的透镜不透明,与阿托皮性疾病有关.
  • 了解阿托皮性白内障的生物特征对于诊断和管理至关重要.

研究的目的:

  • 为了研究白内障和透镜厚度之间的关联.
  • 为了比较患者的透镜厚度,阿托皮性白内障,非阿托皮性白内障和正常的透镜.

主要方法:

  • 进行了一项追溯匹配病例控制研究.
  • 分析了31只患有白内障的眼睛,62只患有非白内障的眼睛和31只正常的眼镜,根据年龄和性别进行了匹配.
  • 使用统计方法测量和分析镜片厚度 (LT),包括反复测量差异分析和多变量逻辑回归.

主要成果:

  • 与非拓性白内障 (3.94毫米) 和正常透镜 (4.11毫米) 相比,患有拓性白内障的眼睛表现出明显较薄的透镜 (平均LT 3.76毫米).
  • 较薄的LT与前额外内白内障 (ASC) (OR,5.61) 有关,与年龄有负相关.
  • 青白内障在形白内障 (77.4%) 中比在非形白内障 (38.7%) 中更为普遍.

结论:

  • 患有白内障的眼睛中的透镜比对照组的眼睛更薄.
  • 阿托皮性白内障通常存在前额外膜,这与这种观察到的透镜变薄有关.