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在vivo中测量晶体透镜的折射率

Optometry and vision science : official publication of the American Academy of Optometry

|October 27, 2023

概括

这项研究引入了一种新的方法来测量人眼的晶状镜片折射率 in vivo. 这种技术使用前段光学连贯断层扫描 (AS-OCT) 和Scheimpflug成像,揭示了镜片折射率的显著个体变化.

科学领域:

眼科医生眼科眼科
生物医学光学生物医学光学
光学工程是指光学工程.

背景情况:

测量人体晶状镜片的体内折射率是眼科的一个持续挑战.
准确的折射率数据对于理解眼光学和开发有效的视力校正策略至关重要.

研究的目的:

开发和验证一种新的方法来测量水晶镜片的折射率 in vivo.
将前段光连贯断层扫描 (AS-OCT) 与 Scheimpflug 成像相结合,用于同时测量折射率和厚度.

主要方法:

开发一个与AS-OCT系统集成的可光线追踪的Scheimpflug成像系统.
在7名受试者中同时测量了沿中心光线和镜片形状的平均镜片折射率 (Nav).
结合系统确定透镜折射率和厚度的能力的理论验证.

主要成果:

平均透镜折射率 (Nav) 在受试者之间差异很大,从1.383到1.419不等.
在镜头直径上观察到镜头折射率功能的个体变化.
适应眼睛的Nav增加,以及确定的镜片厚度和配置文件.

结论:

人类晶状镜片的折射率表现出相当大的个体间变化,无论是沿着中心通路还是跨越镜片直径.
开发的可光线追踪的Scheimpflug成像装备的AS-OCT系统对于体内镜片折射率测量是有效的.
这种新方法为人类眼睛的眼部生物识别和光学特性提供了宝贵的见解.

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