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多段眼镜镜片用于近视控制. 第1部分:光学
Hema Radhakrishnan1, Carly Siu Yin Lam2,3, W Neil Charman1
1Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
概括
我们分析了为控制近视而设计的Hoya MiyoSmart和Essilor Stellest眼镜镜片的光学. 两种多焦镜头都在视网膜成像上表现出类似的效果,尽管存在轻微的制造差异.
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:
- 近视的进展是儿童日益关注的问题.
- 多段镜片 (MS) 是一种控制近视的新方法.
- 了解这些镜片的光学特性对于它们的有效性至关重要.
研究的目的:
- 为了比较两个MS眼镜镜片的光学特性:Hoya MiyoSmart和Essilor Stellest.
- 分析这些镜头如何影响眼睛的光学和视网膜图像.
主要方法:
- 使用表面成像,Twyman-Green干扰计和焦点计进行光学评估.
- 测量载体镜片功率和镜片片的特征 (空间分布,功率,形状).
- 几何光学计算来预测对眼光学的影响.
主要成果:
- 制造的MS镜头通常与设计规格相匹配,但存在微小的差异.
- 镜头的功率大约为 +3.50 D (MiyoSmart) 和 +4.00 D (Stellest). 镜头的功率大约是 +3.50 D (MiyoSmart) 和 +4.00 D (Stellest). 镜头的功率大约是 +3.50 D (MiyoSmart) 和 +4.00 D (Stellest).
- 这两种镜头类型都降低了图像对比度,并创建了多个位移图像,效果因瞳孔大小和镜片的配置而异.
结论:
- 霍亚MiyoSmart和Essilor Stellest眼镜镜头在视网膜图像上表现出大致相同的效果.
- 这些近视控制镜片的光学性能是一致的,尽管设计变化.
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