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相关概念视频

Focusing of Light in the Eye01:16

Focusing of Light in the Eye

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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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相关实验视频

Updated: Jun 8, 2025

Scanning Light Scattering Profiler SLPS Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses
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通过动态光利用算法优化新的衍射多焦点眼内透镜的临床结果.

Jorge L Alió1,2, Elinor Megiddo Barnir3,4,5, Ronald Steven S Medalle3,6,7

  • 1Vissum Grupo Miranza, Alicante, Spain. jlalio@vissum.com.

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概括

强度Hanita衍射眼内透镜 (IOL) 在所有距离提供良好的视力. 患者报告了轻度,耐受良好的视觉症状,以及对近视任务的高满意度.

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Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
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Spatio-Temporal In Vivo Imaging of Ocular Drug Delivery Systems using Fiberoptic Confocal Laser Microendoscopy
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科学领域:

  • 眼科医生 眼科 眼科
  • 光学是什么?光学是什么?光学是什么?
  • 生物医学工程 生物医学工程

背景情况:

  • 白内障手术需要眼内镜片 (IOL) 植入才能恢复视力.
  • 新的IOL设计旨在提高视觉质量和视野范围.
  • 强度汉尼塔是一种新的衍射性IOL.

研究的目的:

  • 为了评估强度Hanita IOL植入后的折射结果,光学性能和视觉质量.
  • 评估远距离,中距离和近距离的视力敏度.
  • 分析对比度灵敏度,眼睛偏差和患者报告的结果.

主要方法:

  • 这是一项对64只眼睛的观察性,前性,纵向性研究.
  • 双边白内障手术与强度IOL植入.
  • 综合视觉评估包括VA,失焦曲线,HOA,CS和6个月的问卷.

主要成果:

  • 66%的眼睛实现了0.10 logMAR或更好的未经校正的远距离视力敏度 (UDVA).
  • 失焦曲线在远距离,中距离和近距离范围内显示出一致的视力.
  • 对比度灵敏度没有显著变化;报告了轻微的,耐受良好的主观症状,如光环和光.

结论:

  • 强度哈尼塔衍射性IOL有效地恢复所有距离的视力.
  • IOL的五焦点分布原理增强了焦点深度和视觉范围.
  • 在日常近视任务中观察到高患者满意度.