Results 21 to 30 of about 18,728 (250)

Biological Mineralization of Hydrophilic Intraocular Lenses

Crystals, 2022
Biomaterials calcify upon implantation in contact with biological fluids, which are supersaturated with respect to more than one crystalline phase of calcium phosphate.
Petros G. Koutsoukos, Panagiota D. Natsi, Sotirios P. Gartaganis, Panos S. Gartaganis   +3 more
doaj   +1 more source

Hydrophilic intraocular lens opacification after posterior lamellar keratoplasty - a material analysis with special reference to optical quality assessment [PDF]

, 2017
Background: Laboratory analysis and optical quality assessment of explanted hydrophilic intraocular lenses (IOLs) with clinically significant opacification after posterior lamellar keratoplasty (DMEK and DSAEK).
Auerbach, Florian N., Auffarth, Gerd U., Choi, Chul Y., Giers, Bert C., Khoramnia, Ramin, Mayer, Christian, Sel, Saadettin, Tandogan, Tamer   +7 more
core   +1 more source

Micromachining of Transparent Biocompatible Polymers Applied in Medicine Using Bursts of Femtosecond Laser Pulses

Micromachines, 2020
Biocompatible polymers are used for many different purposes (catheters, artificial heart components, dentistry products, etc.). An important field for biocompatible polymers is the production of vision implants known as intraocular lenses or custom-shape
Evaldas Kažukauskas, Simas Butkus, Piotr Tokarski, Vytautas Jukna, Martynas Barkauskas, Valdas Sirutkaitis   +5 more
doaj   +1 more source

Novel daily disposable therapeutic contact lenses based on chitosan and regenerated silk fibroin for the ophthalmic delivery of diclofenac sodium

Drug Delivery, 2020
The aim of this study was to investigate the possibility of chitosan and regenerated silk fibroin (CS/RSF) blended films as novel biomaterials for daily disposable therapeutic contact lenses based ophthalmic drug delivery system.
Rachasit Jeencham, Manote Sutheerawattananonda, Saowaluk Rungchang, Waree Tiyaboonchai   +3 more
doaj   +1 more source

Terahertz-based system for dehydration analysis of hydrogel contact lenses [PDF]

, 2019
The use of terahertz-based techniques has grown very fast since they are capable of performingevaluations at molecular level, being very suitable for the analysis of biological samples and bioma-terials such as those for contact lenses.
Burgos Fernández, Francisco Javier, Guaus Guerrero, Ester, Martínez, Cristina, Vilaseca Ricart, Meritxell   +3 more
core   +2 more sources

Chlorhexidine kinetics of hydrophilic contact lenses

Journal of Pharmacy and Pharmacology, 1978
Abstract An average chlorhexidine concentration of 4·5 μg mg−1 lens (wet weight) was measured in HEMA-based contact lenses after 16 days of the following treatment. The lenses were maintained 16 h daily in 1·5 ml of a solution containing Chlorhexidine digluconate 0·005%, and then worn by adult albino rabbits 8 h daily.
D L, Mackeen, K, Green
openaire   +2 more sources

Unprecedented Scissor Effect of Macromolecular Cross-linkers on the Glass Transition Temperature of Poly(N-vinylimidazole), Crystallinity Suppression of Poly(tetrahydrofuran) and Molecular Mobility by Solid State NMR in Poly(N-vinylimidazole)-l-poly(tetrahydrofuran) Conetworks [PDF]

, 2013
Unexpected correlations have been found between structural parameters and glass transition temperatures (Tg) of poly(N-vinylimidazole) (PVIm) and crystallinity of poly(tetrahydrofuran) (PTHF) in a series of novel, unique PVIm-l-PTHF amphiphilic ...
Achilleos, Adriaensens, Ajji, Angueira, Asayama, Attila Domján, Bartels, Behraves, Beletskaya, Beletskaya, Beletskaya, Bessbousse, Bhatnagar, Binder, Breslow, Bromberg, Bruns, Bruns, Bruns, Béla Iván, Castillo, Cheng, Csaba Fodor, Cui, Danilovtseva, Dech, Dech, Domján, Domján, Domján, Du Prez, Erdődi, Erdődi, Erdődi, Fife, Fodor, Fodor, Fodor, Fox, Fung, Georgiou, Georgiou, Gogolewski, Green, Guan, Guan, Guan, Guan, Guan, Guan, Guan, Gudipati, Gunatillake, Guo, Hacker, Hadjikallis, Haesslein, Haesslein, Haigh, Hanko, Hanko, Haraszti, Hartmann, Hensle, Hunt, Ihm, Isayeva, Ishikawa, Iván, Iván, Iván, Iván, Iwamoto, Jewrajka, Kali, Kali, Kali, Kamata, Kang, Kennedy, Kennedy, Kennedy, Kiefer, Kretz, Kunitake, Künzler, Künzler, Lai, Lelah, Lequieu, Lequieu, Li, Lin, Lundberg, Macocinschi, Macocinschi, McCombie, McMillin, Menegola, Mespouille, Mespouille, Meyer, Nicolson, Nojima, Overberger, Patrickios, Patrickios, Peters, Petit, Pinchuk, Reyntjens, Rikkou-Kalourkoti, Rimmer, Rimmer, Salamone, Savin, Scherble, Scherble, Simmons, Simmons, Skouta, Smith, Sugimoto, Sugimoto, Sun, Sun, Szycher, Takeshita, Tian, Tobis, Tobis, Tu, Ueda, Vlad, Wang, Wang, Wang, Williams, Xu, Xu, Yuan, Yuan, Zdrahala, Zhu, Özmen   +144 more
core   +1 more source

Natural Biological Macromolecules for Designing Hydrogels as Health Care and Anti-aging Solutions

Engineering Proceedings, 2023
Recent advances in the development of strategies for chemical adaptation of biomacromolecules, such as polysaccharides, proteins, and lipids, have allowed for the design of functional hydrogels suitable for the current requirements in the biomedical and ...
Mariana Chelu, Adina Magdalena Musuc
doaj   +1 more source

Oxygen and ionic transport in hydrogel and silicone-hydrogel contact lens materials : an experimental and theoretical study [PDF]

, 2014
The transport of oxygen, water and naked ions of Na+ and Cl− across two kind of hydrogels materials, made of a conventional hydrogel (Hy) based on hydroxyethyl methacrylate (pHEMA) and a silicone hydrogel (Si-Hy) material containing siloxane moieties ...
Cerretani, Chabra, Cheng, Chhabra, Compañ, Compañ, Compañ, Compañ, Ding, Ennari, Erickson, Eslami, Eslami, Ewald, Garrido, Gonzalez-Méijome, Greengard, Grobe, Gusev, Hill, J.M. González-Méijome, Javier Pozuelo, Kazanskii, Kim, Kim, Künzler, López-Alemany, Maple, María González, Materials Studio 3.2, Müller-Plathé, Nicolson, Nunes, Peppas, Peppas, Pozuelo, Pozuelo, Pozuelo, Ratner, Saiz, Schmidt, Sergio Mollá, Sun, Sun, Sun, Tiemblo, Tocci, Tsuruta, Tung, Vicente Compañ, Wang, Weissman, Wichterle, Widom, Willis, Willis, Yasuda   +56 more
core   +1 more source

The influence of PEGDA’s molecular weight on its mechanical properties in the context of biomedical applications

Current Directions in Biomedical Engineering, 2022
Hydrogels are 3D polymeric networks, which exhibit properties such as softness, viscoelasticity and their ability to absorb large amounts of water. These characteristics make them exceptionally suitable in biomedicine as e.g.
Rekowska Natalia, Arbeiter Daniela, Seitz Hermann, Mau Robert, Riess Alexander, Eickner Thomas, Grabow Niels, Teske Michael   +7 more
doaj   +1 more source