Results 1 to 10 of about 372,775 (305)

Modeling low order aberrations in laser guide star adaptive optics systems [PDF]

, 2007
When using a laser guide star (LGS) adaptive optics (AO) system, quasi-static aberrations are observed between the measured wavefronts from the LGS wavefront sensor (WFS) and the natural guide star (NGS) WFS.
Bouchez, Antonin H., Clare, Richard M., van Dam, Marcos A.   +2 more
core   +2 more sources

It is a sufficient condition only, not a necessary and sufficient condition, for decomposing wavefront aberrations

Journal of the European Optical Society-Rapid Publications, 2022
The classic equation for decomposing the wavefront aberrations of axis-symmetrical optical systems has the form, W ( h 0 , ρ , ϕ ) = ∑ j = 0 ∝ ∑ p = 0 ∝ ∑ m = 0 ∝ C 2 j + m 2 p + m m ( h 0 ...
Lin Psang
doaj   +1 more source

Effect of Corneal Incision Features on Corneal Endothelial Cell, Astigmatism, and Higher-Order Aberrations After Implantable Collamer Lens Implantation. [PDF]

J Ophthalmol
Lin IC, Cheng M, Li M, Jiang Y, Xu G, Lei Y, Mao Z, Ning R, Chen X, Wang X.   +9 more
europepmc   +3 more sources

High order aberration and straylight evaluation after cataract surgery with implantation of an aspheric, aberration correcting monofocal intraocular lens [PDF]

International Journal of Ophthalmology, 2015
AIM:To evaluate the quality of vision in respect to high order aberrations and straylight perception after implantation of an aspheric, aberration correcting, monofocal intraocular lens (IOL).METHODS:Twenty-one patients (34 eyes) aged 50 to 83y underwent
Florian T A Kretz, Tamer Tandogan, Ramin Khoramnia, Gerd U Auffarth   +3 more
doaj   +1 more source

Active Aberration Correction with Adaptive Coefficient SPGD Algorithm for Laser Scanning Confocal Microscope

Sensors, 2022
A laser scanning confocal microscope (LSCM) is an effective scientific instrument for studying sub-micron structures, and it has been widely used in the field of biological detection. However, the illumination depth of LSCMs is limited due to the optical
Kunhua Zhou, Zhizheng Wu, Tianyu Zhang, Feng Li, Azhar Iqbal, Suresh Sivanandam   +5 more
doaj   +1 more source

Estimation of high-order aberrations and anisotropic magnification from cryo-EM data sets in RELION-3.1

IUCrJ, 2020
Methods are presented that detect three types of aberrations in single-particle cryo-EM data sets: symmetrical and antisymmetrical optical aberrations and magnification anisotropy. Because these methods only depend on the availability of a preliminary 3D
Jasenko Zivanov, Takanori Nakane, Sjors H. W. Scheres   +2 more
doaj   +1 more source

Self calibration of sensorless adaptive optical microscopes [PDF]

Journal of the European Optical Society-Rapid Publications, 2011
We present a self-calibrating scheme for microscopes using model-based wavefront sensorless adaptive optics. Unlike previous methods, this scheme permits the calibration of system aberration modes without the need for a separate wavefront sensor or ...
Thayil Anisha, Booth Martin J.
doaj   +1 more source

PRODUCIBILITY ANALYSIS OF LENS SYSTEM DURING OPTICAL DESIGN STAGE [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2020
Subject of Research. The paper presents the idea of combining various stages of production of optical devices in a single logical sequence from the design of optical elements, through the mechanical and technological production stages, to the calculation
Irina L. Livshits, Oliver Faehnle
doaj   +1 more source

Implantation of a Small Aperture Intraocular Lens in Eyes with Irregular Corneas and Higher Order Aberrations

Journal of Ophthalmic & Vision Research, 2022
Purpose: Corneal irregularities can lead to high order aberrations (HOAs) and may influence the outcomes in terms of intraocular lens (IOL) selection and visual acuity assessment.
Fabrizio Franco, Marco Branchetti, Lidia Vicchio, Federica Serino, Marco Piergentili, Vito Spagnuolo, Francesca Santoro, Gianni Virgili, Fabrizio Giansanti   +8 more
doaj   +1 more source

The effects of implantable collamer lens implantation on higher order aberrations [PDF]

International Journal of Ophthalmology, 2019
AIM: To evaluate the changes in higher order aberrations (HOAs) after implantable collamer lens (ICL; Staar Surgical, Nidau, Switzerland) implantation. METHODS: Totally 30 eyes of 18 patients with myopia were included in this study with an average age ...
Belma Kayhan, Efekan Coskunseven, Onurcan Sahin, Ioannis Pallikaris   +3 more
doaj   +1 more source