Results 81 to 90 of about 16,352,078 (311)

Spherical aberration in contact lens wear

open access: yes, 2008
INTRODUCTION: The aim of the present studies was to investigate the effect on spherical aberration of different non custom-made contact lenses, both with and without aberration control.
Lindskoog, Pettersson A   +4 more
core   +2 more sources

Self retaining contact lens system for vitreous surgery

open access: yesIndian Journal of Ophthalmology, 2004
We describe the principle and design of a new self-retaining contact lens system for vitreous surgery. The system has three lenses: the plano-concave, prism and magnifying lens.
Chalam Kakarla, Shah Vinay
doaj  

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal   +4 more
wiley   +1 more source

Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev   +2 more
wiley   +1 more source

A new lens for observing fundus with a noncontact wide-angle viewing system

open access: yesClinical Ophthalmology, 2017
Mihori Kita, Yukiko Fujii, Sachiyo Hama Department of Ophthalmology, National Organization Kyoto Medical Center, Kyoto, Japan Abstract: Drying of the cornea during surgery, which causes poor visibility of the fundus, is one of the most serious problems
Kita M, Fujii Y, Hama S
doaj  

OntOMat: Toward Ontology‐Based Product and Process Design Engineering and Optimization Solutions Fueling Circular Value Chains

open access: yesAdvanced Engineering Materials, EarlyView.
The OntOMat ontology establishes a structured framework for polymer matrix fiber reinforced composite materials, integrating manufacturing processes, characterization methods, and multiscale design through the VDI/VDE 3682 formalized process description standard.
Nicolas Christ   +19 more
wiley   +1 more source

Indocyanine Green (ICG) Fluorescence-Assisted Open Surgery Using the Rubina® Lens System in the Pediatric Population: A Single-Center Prospective Case Series. [PDF]

open access: yesChildren (Basel), 2023
Esposito C   +8 more
europepmc   +1 more source

The influence of centre thickness on miniscleral lens flexure

open access: yes, 2019
Purpose To examine the influence of centre thickness upon miniscleral lens flexure and the association between the magnitude of in-vivo lens flexure and scleral toricity.
Collins, Michael   +7 more
core   +1 more source

cle801/Lens-Classification: Lens classification methods

open access: yes, 2020
This is the first release of the lens classification ...
cle801
core   +1 more source

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

open access: yesAdvanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali   +5 more
wiley   +1 more source

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