Results 31 to 40 of about 100,646 (310)

Impact of crossplay between ocular aberrations and depth of focus in topo-guided laser-assisted in situ keratomileusis outcomes

open access: yesIndian Journal of Ophthalmology, 2023
Purpose: To develop a nomogram in cases with mismatch between subjective and Topolyzer cylinder, and based on the magnitude of the mismatch, customize a treatment plan to attain good visual outcomes post-laser-assisted in situ keratomileusis (LASIK ...
Pooja Khamar   +6 more
doaj   +1 more source

Aberration-free calibration for 3D single molecule localization microscopy

open access: yes, 2017
We propose a straightforward sample-based technique to calibrate the axial detection in 3D single molecule localization microscopy (SMLM). Using microspheres coated with fluorescent molecules, the calibration curves of PSF-shaping- or intensity-based ...
Clément Cabriel (17502168)   +3 more
core   +1 more source

Aberration-corrected time aperture of an electro-optic time lens

open access: yes, 2022
Recently, there has been renewed interest in electro-optic time lenses due to their favorable properties for quantum photonic applications. Here, we propose a new analytical approach to estimate the chirp rate of a time lens implemented using an electro ...
Sanjay Kapoor (43319)   +2 more
core   +1 more source

Neuronal Mechanism for Compensation of Longitudinal Chromatic Aberration-Derived Algorithm

open access: yesFrontiers in Bioengineering and Biotechnology, 2018
The human visual system faces many challenges, among them the need to overcome the imperfections of its optics, which degrade the retinal image.
Yuval Barkan, Hedva Spitzer
doaj   +1 more source

Effect of the Gravitational Aberration on the Earth Gravity Field [PDF]

open access: yes, 2021
Discussing the problem of the external gravitational potential of the rotating Earth, we have to consider the fundamental postulate of the finite speed of the propagation of gravitation.
Pashkevich, Vladimir V.   +3 more
core   +1 more source

Permanent Maxillary First Molar with Two Rooted Anatomy: A Rare Occurrence [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2018
The basis of successful endodontic therapy resides on sound and thorough knowledge of the root canal anatomy, its variations and the clinical skills. The importance of the knowledge of the anatomy of root canals cannot be overemphasized. Unusual root and
Renita Soares   +4 more
doaj   +1 more source

Defocus aberration, low order aberration and high order aberration using wavefront sensor (n = 32).

open access: yes, 2016
Defocus aberration, low order aberration and high order aberration using wavefront sensor (n = 32).
James T. Banta (2580628)   +6 more
core   +1 more source

A Forward Model for Estimating Phase Aberration in Ultrasound Imaging

open access: yes, 2023
In this paper, we first proposed that the phase aberration profile estimated by cross-correlation methods is the sum of the true phase aberration profile and the geometric delay change due to the shifting of the focus point caused by the true phase ...
Yuan Xu (14041857)   +1 more
core   +1 more source

Central Nervous System Tumors Among Infants in Canada: A Report From CYP‐C

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) tumors in infants are rare, pose unique clinical challenges, and lack large‐scale evidence‐based data to guide management. This study seeks to describe CNS tumors in Canadian infants and to compare their outcomes with those of older children.
Samuel Sassine   +17 more
wiley   +1 more source

Misalignment induced aberration off-axis optical system

open access: yes, 2016
Through introducing transformed pupil vector and shifted center of aberration fields vector into the nodal aberration expansions of an axially symmetric optical system, the aberration expression in third order of an off-axis optical system and ...
Ma Zhen   +4 more
core   +1 more source

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