Results 81 to 90 of about 6,169 (204)
Detection of significant vision conditions in children using QuickSee wavefront autorefractor
Ophthalmic and Physiological Optics, Volume 44, Issue 3, Page 501-513, May 2024.Abstract Purpose This study evaluated the ability of QuickSee to detect children at risk for significant vision conditions (significant refractive error [RE], amblyopia and strabismus). Methods Non‐cycloplegic refraction (using QuickSee without and with +2 dioptre (D) fogging lenses) and unaided binocular near visual acuity (VA) were measured in 4‐ to ...
Anh Bui +6 more
wiley +1 more source
SAOLIM, a prototype of a low cost System for Adaptive Optics with Lucky Imaging
, 2010 A prototype of a low cost Adaptive Optics (AO) system has been developed at the Instituto de Astrofisica de Andalucia (CSIC) and tested at the 2.2m telescope of the Calar Alto observatory.
Aceituno, F. J. +3 more
core +1 more source
Ametropia detection using a novel, compact wavefront autorefractor
Ophthalmic and Physiological Optics, Volume 44, Issue 2, Page 311-320, March 2024.Abstract Introduction Despite the well‐known reproducibility issues of subjective refraction, most studies evaluating autorefractors compared differences between the device and subjective refraction. This work evaluated the performance of a novel handheld Hartmann–Shack‐based autorefractor using an alternative protocol, which considered the inherent ...
Carlos S. Hernández +10 more
wiley +1 more source
, 2010 The Magellan Adaptive Secondary AO system, scheduled for first light in the fall of 2011, will be able to simultaneously perform diffraction limited AO science in both the mid-IR, using the BLINC/MIRAC4 10\{mu}m camera, and in the visible using our novel
Close, Laird M. +4 more
core +1 more source
Ophthalmic and Physiological Optics, Volume 44, Issue 1, Page 168-176, January 2024.Abstract Purpose Previous transverse and a handful of longitudinal studies have shown that the slope of the static accommodation response/stimulus curve declines as complete presbyopia is approached. Changes in pupillary miosis and ocular spherical aberration (SA) are also evident.
Sotiris Plainis +2 more
wiley +1 more source
Spectrally resolved single-shot wavefront sensing of broadband high-harmonic sources
, 2017 Wavefront sensors are an important tool to characterize coherent beams of extreme ultraviolet radiation. However, conventional Hartmann-type sensors do not allow for independent wavefront characterization of different spectral components that may be ...
0000-0003-4753-3173 +5 more
core +2 more sources
Journal of the European Optical Society-Rapid Publications, 2020 In some active optics system, the influence function, which is the surface deformation ability of an actuator, is measured by directly detecting the mirror surface using an interferometer and the surface correction of the primary mirror is done using the
Yi Zhu, Tao Chen, Hongzhuang Li
doaj +1 more source
Thermal analysis and experimental study of end-pumped Nd: YLF laser at 1053 nm
Photonic Sensors, 2017 We have numerically analyzed the thermal effects in Nd: YLF laser rod. The calculations of temperature and stress distributions in the Nd: YLF laser rod was performed with finite element (FE) simulations.
R. M. El-Agmy, N. Al-Hosiny
doaj +1 more source
Broadband, Common-Path, Interferometric Wavefront Sensor [PDF]
Hybrid sensors comprising Shack-Hartmann Wavefront Sensor (S-HWFS) and Zernike Wavefront Sensor (Z-WFS) capabilities are presented. The hybrid sensor includes a Z-WFS optically arranged in-line with a S-HWFS such that the combined wavefront sensor ...
Wallace, James Kent
core +1 more source
Active Control of Laser Wavefronts in Atom Interferometers
, 2017 Wavefront aberrations are identified as a major limitation in quantum sensors. They are today the main contribution in the uncertainty budget of best cold atom interferometers based on two-photon laser beam splitters, and constitute an important limit ...
Langlois, Mehdi +3 more
core +2 more sources