通过自适应光学来提高2光子视力
Hannah K Doyle1,2, Sofie R Herbeck1,3, Alexandra E Boehm4,5
1Department of Electrical Engineering and Computer Sciences, University of California Berkeley, Berkeley, CA, USA.
Journal of vision
|October 6, 2023
概括
视觉中的二光子 (2光子) 效应可以使用自适应光学显著增强. 这项技术提高了2光子视力的可见性,使潜在的新视网膜成像系统成为可能.
科学领域:
- 视觉科学科学 视觉科学
- 眼科医生 眼科 眼科
- 生物物理学的生物物理.
背景情况:
- 视觉中的两光子 (2光子) 效应涉及两个光子被形光色素吸收,在一半的波长下产生光的感觉.
- 这种效应在红外光下特别明显,因为人类视觉在这些波长下对单光子吸收基本上不敏感.
- 短脉冲激光器和自适应光学可以通过分别在时间和空间集中光子来增强2光子效应.
研究的目的:
- 用自适应光学量化2光子效应的增强.
- 为证明2光子效应的发生在光受体水平提供证据.
- 概述一个系统的规格,该系统结合了2光子视觉和适应光学,用于视网膜成像和刺激.
主要方法:
- 进行了颜色匹配实验,以测量2光子效应的亮度增加,使用自适应光学.
- 收集了基于图像的证据,以支持2光子效应的光受体水平定位.
- 进行了计算,以确定2光子视觉和自适应光学系统的系统规格.
主要成果:
- 适应光学校正导致2光子效应的发光率增加了25倍,相当于脉冲宽度减少了96%.
- 基于图像的发现证实了2光子效应发生在光受体水平.
- 该研究计算了能够使用红外光和自适应光学成像和刺激视网膜的系统的规格.
结论:
- 适应光学显著提高了2光子视觉效应的亮度和可见性.
- 2光子效应局部存在于光受体水平.
- 使用2光子视觉和自适应光学的单一红外波长系统可以达到与用于视网膜成像和刺激的传统显示器相比的亮度水平.
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