Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Focusing of Light in the Eye01:16

Focusing of Light in the Eye

3.2K
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...
3.2K
Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

684
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
684

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Potential Refractive Error Due to Axial Displacement of Intraocular Lenses with Clinically Relevant Compression Diameters.

Clinical ophthalmology (Auckland, N.Z.)·2026
Same author

Acneiform Eruption with Deucravacitinib: Systematic Review and Meta-Analysis.

Clinical and experimental dermatology·2026
Same author

Comparing Spider Sampling Methods in a Eucalypt Forest in Wet and Dry Conditions.

Animals : an open access journal from MDPI·2026
Same author

Nearest neighbors phase control for optical phased array communications.

Optics express·2026
Same author

Paraneoplastic pityriasis rubra pilaris: a systematic review.

Clinical and experimental dermatology·2025
Same author

Meta-analysis of defocus curves of monofocal, enhanced monofocal and extended depth of focus IOLs.

BMJ open ophthalmology·2025

相关实验视频

Updated: Sep 12, 2025

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
05:46

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity

Published on: September 20, 2024

527

角膜无球性的基于种族的差异:眼内透镜功率计算,图像质量和白内障手术后视觉敏度,使用眼睛模型.

Kamal K Das1, Rajaraman Suryakumar1, Wei Lu1

  • 1Research and Development, Alcon Research LLC, Fort Worth, TX, USA.

Clinical ophthalmology (Auckland, N.Z.)
|August 4, 2025
PubMed
概括

角膜无球性和球形偏差 (SA) 不显著影响眼内透镜 (IOL) 功率或视力敏度 (VA) 在不同的种族. 这一发现表明,无论患者的种族,对IOL选择采用标准化的方法可能是合适的.

关键词:
一个A-常数.在 IOL 中计算功率.作为一个球体,它具有asphericity.民族身份 民族身份球形偏差是指球形偏差.视力敏度 视力敏度 视力敏度

更多相关视频

Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation
04:59

Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation

Published on: July 7, 2023

2.5K
Full-Field Optical Coherence Microscopy for Histology-Like Analysis of Stromal Features in Corneal Grafts
07:51

Full-Field Optical Coherence Microscopy for Histology-Like Analysis of Stromal Features in Corneal Grafts

Published on: October 21, 2022

1.7K

相关实验视频

Last Updated: Sep 12, 2025

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
05:46

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity

Published on: September 20, 2024

527
Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation
04:59

Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation

Published on: July 7, 2023

2.5K
Full-Field Optical Coherence Microscopy for Histology-Like Analysis of Stromal Features in Corneal Grafts
07:51

Full-Field Optical Coherence Microscopy for Histology-Like Analysis of Stromal Features in Corneal Grafts

Published on: October 21, 2022

1.7K

科学领域:

  • 眼科医生 眼科 眼科
  • 生物医学工程 生物医学工程
  • 眼镜测量是指眼睛的测量.

背景情况:

  • 角膜无球性和球形偏差 (SA) 是关键的光学特性,可以影响眼内透镜 (IOL) 植入后的视觉结果.
  • 记录了角膜形状和异常的种族差异,这引发了关于当前IOL功率计算公式的普遍适用性的问题.

研究的目的:

  • 调查角膜亚球性和SA在IOL功率和预测视力敏度 (VA) 上的种族变化的影响.
  • 为了确定是否需要针对种族的特定调整来计算IOL功率.

主要方法:

  • 使用已发表的临床数据,开发了代表12个不同的种族群体的个体眼睛模型.
  • 对于6毫米瞳孔的模拟角膜SA,跨组范围为0.17至0.31微米.
  • 评估IOL功率差异和计算视觉性能 (MTF,VA) 使用球形和不球形IOL在不同的失焦水平下.

主要成果:

  • Corneal SA 在各个族群之间有所不同,但最大的 IOL 功率差异是最小的 (约. -0.1 D) 对于克莱伦CNA0T0镜头与平均角膜相比.
  • 球形和无球形的IOL在各个种族之间都表现一致,而无球形的IOL显示出稍微更好的MTF和VA.
  • 对CNA0T0镜头计算的A常数在各族群中显示出最小的差异 (119.029-119.151).

结论:

  • 角膜无球性和SA的种族差异对IOL功率和预测的视觉结果的影响微不足道.
  • 克莱伦CNA0T0镜头使用单个A-Constant可能适用于不同种族的人口.
  • 目前的IOL计算方法似乎足够强大,可以适应种族差异而不需要进行特定调整.