Results 191 to 200 of about 96,711 (321)

Extremely asymmetric ectasia: Tomographically unilateral keratoconus

Acta Ophthalmologica, EarlyView.
Abstract Purpose To investigate the characteristics of apparently stable forms of tomographically unilateral keratoconus (KC). Methods In this retrospective case–control study, strict unilaterality criteria were applied to select tomographically unilateral cases with ≥3 years of follow‐up.
Hasan Shabani, Wishal D. Ramdas, Magda A. Meester‐Smoor, Dimitris Rizopoulos, Caroline C. W. Klaver, Bart T. H. van Dooren, Annette J. M. Geerards   +6 more
wiley   +1 more source

Multicolor wavefront sensing using Talbot effect for high-order harmonic generation

Physical Review Research
High-order harmonic generation (HHG) using femtosecond lasers is an efficient and cost-effective method for producing attosecond and femtosecond light in the extreme ultraviolet and soft x-ray regions.
Yang Du, Kui Li, Jin Niu, Angyi Lin, Jie Li, Zhongwei Fan, Guorong Wu, Xiaoshi Zhang, Fucai Zhang   +8 more
doaj   +1 more source

EUV and Hard X-ray Hartmann Wavefront Sensing for Optical Metrology, Alignment and Phase Imaging. [PDF]

Sensors (Basel), 2021
de La Rochefoucauld O, Dovillaire G, Harms F, Idir M, Huang L, Levecq X, Piponnier M, Zeitoun P.   +7 more
europepmc   +1 more source

Wavefront Estimation From a Single Measurement: Uniqueness and Algorithms [PDF]

arXiv
Wavefront estimation is an essential component of adaptive optics where the goal is to recover the underlying phase from its Fourier magnitude. While this may sound identical to classical phase retrieval, wavefront estimation faces more strict requirements regarding uniqueness as adaptive optics systems need a unique phase to compensate for the ...
arxiv  

Tracking Length and Differential-Wavefront-Sensing Signals from Quadrant Photodiodes in Heterodyne Interferometers with Digital Phase-Locked-Loop Readout [PDF]

, 2020
Gerhard Heinzel, M. Dovale Álvarez, Alvise Pizzella, Nils Brause, Juan José Esteban Delgado   +4 more
openalex   +1 more source

A simulator-based autoencoder for focal plane wavefront sensing [PDF]

, 2022
Maxime Quesnel, Gilles Orban de Xivry, Olivier Absil, Gilles Louppe   +3 more
openalex   +1 more source

Presbyopia Correction in Lens Replacement Surgery: A Review

Clinical &Experimental Ophthalmology, EarlyView.
ABSTRACT Presbyopia affects approximately 1.8 billion individuals globally, posing significant challenges as life expectancy and near‐vision demands, particularly with mobile phone use, grow. Addressing presbyopia during lens replacement surgery has become a key focus for cataract surgeons, aiming to reduce dependence on corrective eyewear. This review
Benjamin Stern, Damien Gatinel
wiley   +1 more source

On-sky verification of Fast and Furious focal-plane wavefront sensing: Moving forward toward controlling the island effect at Subaru/SCExAO [PDF]

, 2020
S. P. Bos, Sébastien Vievard, Michael J. Wilby, F. Snik, Julien Lozi, Olivier Guyon, Barnaby Norris, Nemanja Jovanović, Frantz Martinache, Jean-François Sauvage, Christoph U. Keller   +10 more
openalex   +1 more source

Adaptive optical microscopy via virtual-imaging-assisted wavefront sensing for high-resolution tissue imaging [PDF]

, 2022
Zhou Zhou, Jiangfeng Huang, Xiang Li, Xiujuan Gao, Zhongyun Chen, Zhenfei Jiao, Zhihong Zhang, Qingming Luo, Ling Fu   +8 more
openalex   +1 more source

Real‐Time Rendering Framework for Holography

Computer Graphics Forum, EarlyView.
Abstract With the advent of holographic near‐eye displays, the need for rendering algorithms that output holograms instead of color images emerged. These holograms usually encode phase maps that alter the phase of coherent light sources such that images result from diffraction effects.
Sascha Fricke, Susana Castillo, Martin Eisemann, Marcus Magnor   +3 more
wiley   +1 more source