登陆区域的扭力对镜镜片的适配特性和光学效应的影响
Julian Alexander1, Yabkal Belaineh Aweke1, Zibonele Bhebhe1
1Optometry & Vision Science, Centre for Vision & Eye Research, Queensland University of Technology, Brisbane, Queensland, Australia.
概括
尖膜镜片中的托里克着陆区域显著减少了镜片的曲和旋转. 这种适合性和光学方面的改善即使在较低的状度下也能观察到,有利于视觉性能.
科学领域:
- 眼科医生 眼科 眼科
- 眼镜测量是指眼睛的测量.
- 生物医学工程 生物医学工程
背景情况:
- 膜镜片的合适度对于光学性能至关重要.
- 登陆区与眼睛表面的对齐影响了镜片的稳定性和视力.
- 量化托里克着陆区的影响对于优化膜透镜设计至关重要.
研究的目的:
- 量化着陆区扭力对膜透镜适配特征的影响.
- 评估托里克着陆区域对镜头曲,旋转和分散的影响.
- 为了评估残留状的对这些适配参数的影响.
主要方法:
- 10名健康参与者佩戴了带有不同标称着陆区域扭矩度 (0-200μm) 的硬膜透镜.
- 透镜的曲,旋转和分散是使用过度拓测量的.
- 使用角膜 - 状形仪量化了状形度.
主要成果:
- 与球形区域相比,托里克着陆区域显著减少了镜头曲 (~62%) 和旋转 (~77%).
- 镜头去中心化 (水平和垂直) 与着陆区扭力没有显著变化.
- 这些效应在具有低和高硬膜度的眼睛中一致.
结论:
- 托里克着陆区域 (100-200微米) 通过减少曲和旋转来改善状镜片的适合性.
- 牙垂落区域的好处甚至在具有较低膜垂落度的眼睛中也很明显.
- 整合托里克着陆区可能会提高光学性能,特别是在前面表面设计中.
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