Results 51 to 60 of about 887,984 (236)

CLEAR - Contact lens complications. [PDF]

Contact lens & anterior eye : the journal of the British Contact Lens Association, 2021
Contact lens-related complications are common, affecting around one third of wearers, although most are mild and easily managed. Contact lenses have well-defined anatomical and physiological effects on the ocular surface and can result in other consequences due to the presence of a biologically active material.
Stapleton, Fiona, Bakkar, May, Carnt, Nicole, Chalmers, Robin, Vijay, Ajay Kumar, Marasini, Sanjay, Ng, Alison, Tan, Jacqueline, Wagner, Heidi, Woods, Craig, Wolffsohn, James S   +10 more
openaire   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Clinical Performance and Patient Satisfaction of Hybrid Contact Lenses in Patients with Keratoconus

Türk Oftalmoloji Dergisi, 2023
Objectives:The aim of the study was to evaluate the fitting process, clinical performance, and patient satisfaction of hybrid contact lenses (HCL) in patients with keratoconus (KC).Materials and Methods:Sixty-eight KC patients (35 female, 33 male) who ...
Aydogdy Serdarov, Banu Bozkurt, Yalçın Karaküçük, Süleyman Okudan   +3 more
doaj   +1 more source

Relationship of Peripapillary Retinal Perfusion with Peripapillary Retinal Nerve Fiber Layer Thickness in Diabetes Mellitus Patients without Diabetic Retinopathy

IJRETINA (International Journal of Retina), 2021
Introduction: Impaired blood flow is an early sign of retinal dysfunction in diabetes. Impaired blood flow of the radial peripapillary capillaries can affect the Retinal Nerve Fiber Layer (RNFL) or ganglion cell function.
Sindi Dwijayanti, Irawati Irfani, Susanti Natalya Sirait, Elsa Gustianty, Erwin Iskandar, R. Angga Kartiwa   +5 more
doaj   +1 more source

Contact mechanics for randomly rough surfaces [PDF]

, 2006
When two solids are squeezed together they will in general not make atomic contact everywhere within the nominal (or apparent) contact area. This fact has huge practical implications and must be considered in many technological applications.
Archard, Arzt, B.N.J. Persson, Barquins, Bollinne, Borri-Brunetto, Borri-Brunetto, Bureau, Bureau, Bush, Bush, Buzza, Carbone, Carbone, Derjaguin, Derjaguin, Fuller, Gao, Gibson, Greenwood, Greenwood, Greenwood, Hertz, Hui, Hyun, Israelachvili, Johnson, Johnson, Jäckle, Laguarta, Luan, Mecke, Nayak, Ocko, Persson, Persson, Persson, Persson, Persson, Persson, Persson, Persson, Persson, Persson, Persson, Restagno, Seydel, Sherge, Tabor, Vorvolakos, Yang, Zhang   +51 more
core   +3 more sources

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

A biocompatible active artificial iris [PDF]

, 2016
A contact lens mimicking an artificial iris is presented as solution for people suffering from iris deficiencies. As this is a biomedical device, biocompatibility is a key specification for material choice and design.
De Smet, Herbert, De Smet, Jelle, Vanhaverbeke, Celine, Vasquez Quintero, Andrés Felipe   +3 more
core  

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source

Self-Assembly of Zinc Oxide Photonic Crystals in Viscous Liquids: Synthesis, Characterization, and Application to Colored Contact Lenses

Photonics
Structural color is a kind of natural color that widely exists in nature. The ordered microstructure of nano materials can absorb or reflect light of specific wavelength, thus showing colorful colors. Structural color is an ideal choice for color contact
Shuwen Hou, Zichen Pan, Lin Zhao, Xue-Lian Han, Quan-Xi Zhang, Shou-Nian Ding   +5 more
doaj   +1 more source

Use of the Visante™ OCT to measure the sagittal depth and scleral shape of keratoconus compared to normal corneae: Pilot study

Journal of Optometry, 2013
Purpose: The purpose of this study is to demonstrate and compare the use of optical coherence tomography (OCT) in measuring sagittal depth (SD) and in describing the corneo–scleral junctions with the use of scleral angles, in a population of keratoconics
Luigina Sorbara, Jyotsna Maram, Katrin Mueller   +2 more
doaj   +1 more source