Optical properties of in situ eye lenses measured with X-ray Talbot interferometry: a novel measure of growth processes.

Optical properties of in situ eye lenses measured with X-ray Talbot interferometry: a novel measure of growth processes.
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DOI:
10.1371/journal.pone.0025140
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发表时间:
2011
期刊:
影响因子:
3.7
通讯作者:
Pierscionek B
Pierscionek B
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Hoshino M;Uesugi K;Yagi N;Mohri S;Regini J;Pierscionek B

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作为眼睛的主要光学部件的透镜具有梯度折射率,这是提供足够的屈光力和图像质量所需的。整个透镜的折射率变化取决于不同蛋白质类的分布和浓度。在这项研究中,我们提出了第一次测量的折射率在原位眼透镜从五个物种使用一个专门构造的X射线塔尔博特光栅干涉仪。测量在两个平面中进行:包含光轴的平面(矢状面)和与之正交的平面(赤道面)。结果表明,以前未检测到的不连续性和波动的折射率分布,在不同的物种。这些可能与生长过程有关,可能是离散发育阶段的第一个光学证据。
The lens, a major optical component of the eye, has a gradient refractive index, which is required to provide sufficient refractive power and image quality. The refractive index variations across the lens are dependent on the distributions and concentrations of the varying protein classes. In this study, we present the first measurements of the refractive index in the in situ eye lens from five species using a specially constructed X-ray Talbot grating interferometer. The measurements have been conducted in two planes: the one containing the optic axis (the sagittal plane) and the plane orthogonal to this (the equatorial plane). The results show previously undetected discontinuities and fluctuations in the refractive index profile that vary in different species. These may be linked to growth processes and may be the first optical evidence of discrete developmental stages.
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发表时间: 2004-02-01
影响因子: 2.5
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