Results 41 to 50 of about 142,742 (388)
Wavefront aberrations in children with myopia and hyperopia before and after cycloplegia
Российский офтальмологический журнал, 2018 Purpose: a comparative study of the effect of cycloplegia on wavefront aberration in children with myopia and hyperopia. Material and methods. The study involved 20 patients (39 eyes) with myopic refraction (averagely -5.2 ± 1,5 D) and 26 patients (52 ...
E. P. Tarutta +2 more
doaj +1 more source
A mathematical investigation of a clock and wavefront model for somitogenesis [PDF]
, 2006 Somites are transient blocks of cells that form sequentially along the antero-posterior axis of vertebrate embryos. They give rise to the vertebrae, ribs and other associated features of the trunk.
Baker, Ruth E. +2 more
core +1 more source
Rhythmic Calcium Events in the Lamina Propria Network of the Urinary Bladder of Rat Pups
Frontiers in Systems Neuroscience, 2017 The lamina propria contains a dense network of cells, including interstitial cells (ICs), that may play a role in bladder function by modulating communication between urothelium, nerve fibers and smooth muscle or acting as pacemakers.
Thomas J. Heppner +3 more
doaj +1 more source
Wavefront-sensing with a thin diffuser [PDF]
Opt. Lett. 42(24) 4117 (2017), 2017 We propose and implement a broadband, compact, and low-cost wavefront sensing scheme by simply placing a thin diffuser in the close vicinity of a camera. The local wavefront gradient is determined from the local translation of the speckle pattern. The translation vector map is computed thanks to a fast diffeomorphic image registration algorithm and ...
arxiv +1 more source
Interference-assisted kaleidoscopic meta-plexer for arbitrary spin-wavefront manipulation
Light: Science & Applications, 2019 Achieving simultaneous polarization and wavefront control, especially circular polarization with the auxiliary degree of freedom of light and spin angular momentum, is of fundamental importance in many optical applications.
He-xiu Xu +11 more
semanticscholar +1 more source
Evolution of refractive surgeries
Muller Journal of Medical Sciences and Research, 2017 The use of surgical procedures to correct refractive errors of the eye has come a long way. The two main types are corneal procedures and intraocular procedures.
Madhurima K Nayak
doaj +1 more source
Telescope to Observe Planetary Systems (TOPS): a high throughput 1.2-m visible telescope with a small inner working angle [PDF]
, 2006 The Telescope to Observe Planetary Systems (TOPS) is a proposed space mission to image in the visible (0.4-0.9 micron) planetary systems of nearby stars simultaneously in 16 spectral bands (resolution R~20). For the ~10 most favorable stars, it will have
/ +22 more
core +2 more sources
Joint optimization of wavefront sensing and reconstruction with automatic differentiation [PDF]
arXiv, 2022 High-contrast imaging instruments need extreme wavefront control to directly image exoplanets. This requires highly sensitive wavefront sensors which optimally make use of the available photons to sense the wavefront. Here, we propose to numerically optimize Fourier-filtering wavefront sensors using automatic differentiation.
arxiv
Deep learning wavefront sensing.
Optics Express, 2019 We present a new class of wavefront sensors by extending their design space based on machine learning. This approach simplifies both the optical hardware and image processing in wavefront sensing.
Yohei Nishizaki +6 more
semanticscholar +1 more source
Adaptive optics with an infrared pyramid wavefront sensor at Keck
Journal of Astronomical Telescopes Instruments and Systems, 2020 . The study of cold or obscured, red astrophysical sources can significantly benefit from adaptive optics (AO) systems employing infrared (IR) wavefront sensors.
C. Bond +20 more
semanticscholar +1 more source