衍射折射人工晶状体的光散射：一种基于测角仪的单个区域评估方法。
Light scattering from a diffractive-refractive intraocular lens: a goniometer-based approach for individual zone assessment.
作者信息
Łabuz Grzegorz, van den Berg Thomas J T P, Auffarth Gerd U, Khoramnia Ramin
机构信息
David J. Apple Center for Vision Research, Department of Ophthalmology, University Hospital Heidelberg, Heidelberg, Germany.
Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands.
出版信息
Biomed Opt Express. 2022 Nov 30;13(12):6724-6732. doi: 10.1364/BOE.474778. eCollection 2022 Dec 1.
Abstract
We proposed and tested a method to measure light scattering from the diffractive lens profile in an echelle element featuring 9 zones. Measurements were performed using a goniometer-based setup up to 7.5°. The proportion of scattered light was calculated to derive the loss of light. Material scattering was minimal (∼1 deg/sr); however, each echelle zone acted as a scattering source. A nearly gradual straylight increase was found with the zone number showing peak intensity between 3° and 3.75°. An estimated 6.2% ± 0.1% was lost due to scattering, which ought to be considered when reporting an IOL's light loss.
摘要
我们提出并测试了一种方法，用于测量具有9个区域的阶梯光栅元件中衍射透镜轮廓的光散射。使用基于测角仪的装置进行测量，测量角度范围可达7.5°。计算散射光的比例以得出光损失。材料散射极小（约1度/球面度）；然而，每个阶梯光栅区域都充当一个散射源。发现杂散光几乎呈逐渐增加趋势，区域编号在3°至3.75°之间时显示出峰值强度。由于散射导致的光损失估计为6.2%±0.1%，在报告人工晶状体的光损失时应考虑这一点。
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