Results 31 to 40 of about 107,423 (339)

Evaluation of anterior segment parameters in pars plana vitrectomy and silicone oil injection

open access: yesDelta Journal of Ophthalmology, 2020
Purpose The aim of this study was to compare the changes in anterior segment parameters induced by pars plana vitrectomy (PPV) and silicone oil injection in phakic and pseudophakic eyes.
Moataz H Osman   +2 more
doaj   +1 more source

Subtle changes of the crystalline lens after cycloplegia: a retrospective study

open access: yesBMC Ophthalmology, 2021
Background The purpose of this study was to evaluate the shape of the crystalline lens in terms of biometry and diopters before and after cycloplegia using the CASIA2 swept-source (SS) optical coherence tomography (OCT) system on the anterior segment ...
Cheng Dai   +3 more
doaj   +1 more source

Finite element study of the accommodation behaviour of the crystalline lens after fs-laser treatment [PDF]

open access: yes, 2013
With aging the ability of the crystalline lens to adapt to different viewing distances decreases. Until now there is no satisfying treatment available.
Besdo, S.   +6 more
core   +2 more sources

Hardness of porous nanocrystalline Co-Ni electrodeposits [PDF]

open access: yes, 2013
The Hall-Petch relationship can fail when the grain size is below a critical value of tens of nanometres. This occurs particularly for coatings having porous surfaces.
A Ibañez   +24 more
core   +1 more source

Computational simulation of aqueous humour dynamics in the presence of a posterior-chamber versus iris-fixed phakic intraocular lens. [PDF]

open access: yesPLoS ONE, 2018
PURPOSE:To compare aqueous humour (AH) dynamics in the presence of a precrystalline (Implantable Collamer Lens®; ICL) or iris-fixed (Artiflex®) phakic intraocular lens (PIOL).
José Ignacio Fernández-Vigo   +8 more
doaj   +1 more source

A Low Temperature Nonlinear Optical Rotational Anisotropy Spectrometer for the Determination of Crystallographic and Electronic Symmetries [PDF]

open access: yes, 2014
Nonlinear optical generation from a crystalline material can reveal the symmetries of both its lattice structure and underlying ordered electronic phases and can therefore be exploited as a complementary technique to diffraction based scattering probes ...
Birss R. R.   +10 more
core   +3 more sources

Haze Estimation of Crystalline Lens by Contrast Sensitivity as a Function of Scattering Light Intensity

open access: yesi-Perception, 2011
Cataract is one of the most typical age-related eye diseases. As the cataract progresses, the crystalline lens becomes hazier and the visual ability deteriorates.
Nozomi Ohnaka
doaj   +1 more source

Second-order Nonlinear Optical Microscopy of Spider Silk [PDF]

open access: yes, 2017
Asymmetric $\rm \beta$-sheet protein structures in spider silk should induce nonlinear optical interaction such as second harmonic generation (SHG) which is experimentally observed for a radial line and dragline spider silk by using an imaging ...
Hien, Khuat Thi Thu   +3 more
core   +2 more sources

Development status of a Laue lens project for gamma-ray astronomy

open access: yes, 2007
We report the status of the HAXTEL project, devoted to perform a design study and the development of a Laue lens prototype. After a summary of the major results of the design study, the approach adopted to develop a Demonstration Model of a Laue lens is ...
  +21 more
core   +1 more source

The Crystalline Lens [PDF]

open access: yesAmerican Journal of Ophthalmology, 1918
With the reservations mentioned in the first paragraph of the Digest of the Literature this section brings the subject up to April, 1919.
openaire   +1 more source

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