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隐形眼镜设计对预视眼患者在光视和比视光照明条件下基于视敏度的客观参数的影响
Orit Sztrigler-Cohen1, Nogah Bromberger1, Yonina Thee1
1Department of Optometry and Vision Science, Hadassah Academic College, Jerusalem 91010, Israel.
Vision (Basel, Switzerland)
|June 27, 2023
概括
长视的渐进式隐形眼镜根据设计和照明显示了不同的视觉性能. 球形镜头提供了更好的对比度灵敏度,而非球形镜头则在光学条件下改善了适应性.
科学领域:
- 眼科医生 眼科 眼科
- 眼镜测量是指眼睛的测量.
- 视觉科学 视觉科学 视觉科学
背景情况:
- 长视障碍的纠正通常使用渐进型软隐形眼镜 (CL).
- 视敏度参数受到CL设计和在不同光线下瞳孔大小的影响.
- 了解这些效应对于优化视觉校正至关重要.
研究的目的:
- 调查球形与非球形CL设计对视敏度参数的影响.
- 为了在中光和光光照明条件下比较客观的视觉参数.
- 确定CL设计如何与照明相互作用以影响长视障碍患者的视觉表现.
主要方法:
- 这是一项前性双盲研究,涉及了前视障碍患者和前视障碍患者.
- 患者配备了球形或非球形的CLs.
- 测量包括对比度灵敏度 (CS),视敏度 (VA) 和在中视和光视条件下适应幅度 (AA).
主要成果:
- 与非球体CL相比,球体CL在低空间频率 (3CPD) 上显示出明显更好的平均CS.
- 镜头设计之间在其他空间频率上没有高对比VA或CS的显著差异.
- 无球CLs在近VA,距离低对比VA和AA之间显示出显著的差异,在中光和光光条件之间,光光照明的改善.
结论:
- 光学照明增强了两种CL设计的视觉敏度和适应幅度.
- 在光学条件下,aspheric CLs产生了显著更高的适应幅度.
- 球形CL在3个CPD的对比敏感度中表现出色,这表明基于视觉需求的个性化CL选择是最佳的.
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