Results 21 to 30 of about 372,775 (305)
Optical Correction of Keratoconus with a Scleral Gas-Permeable Lenses
Oftalʹmologiâ, 2019 The optical properties of the cornea are determined by its ability to refract and transmit light. Keratoconus changes cornea’s shape, the surface of the cornea becomes irregular, which leads to a violation of light refraction and the occurrence of ...
A. V. Myagkov +4 more
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Российский офтальмологический журнал, 2021 Purpose: to evaluate the prospects of customized Finalfit based ablation for optical rehabilitation of a patient with corneal surface errors caused by intrasurgical microtome-induced damage of a corneal flap during a LASIK excimer laser correction of ...
N. V. Khodzhabekyan +4 more
doaj +1 more source
Design strategy and management of aberration correction process for lens with high complexity index [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2021 Subject of Research. The strategy of designing optical imaging systems is defined, which consists in combining various design methods and is based on the theory of structural and parametric synthesis, ensuring the presence of the necessary correction ...
Irina L. Livshits +3 more
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Full‐Color Metaoptical Imaging in Visible Light
Advanced Photonics Research, 2022 Metaoptics is a fast‐growing field with the potential to dramatically miniaturize image sensors. Unlike many other scientific endeavors, metaoptics are poised to make a technological and commercial impact within a few decades of inception. In particular,
Luocheng Huang +3 more
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Photonics, 2023 We present the results of improving resolution in the imaging of two closely spaced point sources with an optical system under the influence of apodization and different types of aberrations. In particular, we consider the effect of coma and astigmatism,
Andra Naresh Kumar Reddy +3 more
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Genomic alterations in primary gastric adenocarcinomas correlate with clinicopathological characteristics and survival. [PDF]
, 2004 Background & aimsPathogenesis of gastric cancer is driven by an accumulation of genetic changes that to a large extent occur at the chromosomal level. In order to investigate the patterns of chromosomal aberrations in gastric carcinomas, we performed
Albertson, Donna +7 more
core +3 more sources
Curvature sensor for the measurement of the static corneal topography and the dynamic tear film topography in the human eye [PDF]
, 2005 A system to measure the topography of the first optical surface of the human eye noninvasively by using a curvature sensor is described. The static corneal topography and the dynamic topography of the tear film can both be measured, and the topographies ...
Gruppetta, S. +3 more
core +3 more sources
Inner Leaf Gel of Aloe striata Induces Adhesion-Reducing Morphological Hyphal Aberrations
Journal of Fungi, 2018 Fungi, particularly molds that are cosmopolitan in soils, are frequent etiologic agents of opportunistic mycoses. Members of the Fusarium solani and Fusarium oxysporum species complexes are the most commonly implicated etiologic agents of opportunistic ...
Gloria Wada, Michael Vincent, Marcia Lee
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Wave front aberrations and patient satisfaction of aspheric intraocular lenses
Journal of the Egyptian Ophthalmological Society, 2018 Aim The aim was to study postoperative wave front higher order aberrations of eyes implanted with aspheric intraocular lens (IOL) in comparison with those with standard spherical IOL and to assess the subjective satisfaction in relation to both IOL ...
Ismail A.N Omar
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Image Ellipticity from Atmospheric Aberrations [PDF]
, 2007 We investigate the ellipticity of the point-spread function (PSF) produced by imaging an unresolved source with a telescope, subject to the effects of atmospheric turbulence.
Asztalos, S. J. +4 more
core +3 more sources