Results 21 to 30 of about 17,333 (189)

Hydrogel Contact Lens for Extended Delivery of Ophthalmic Drugs

International Journal of Polymer Science, 2011
Soft contact lenses can improve the bioavailability and prolong the residence time of drugs and, therefore, are ideal drug carriers for ophthalmic drug delivery. Hydrogels are the leading materials of soft contact lenses because of their biocompatibility
Xiaohong Hu, Lingyun Hao, Huaiqing Wang, Xiaoli Yang, Guojun Zhang, Guoyu Wang, Xiao Zhang   +6 more
doaj   +1 more source

Potential contact and intraocular lenses based on hydrophilic/hydrophobic sulfonated syndiotactic polystyrene membranes

Journal of King Saud University: Science, 2017
Crystalline films of syndiotactic polystyrene (s-PS), a commercially available thermoplastic polymer, having a highly hydrophilic amorphous phase, were achieved by using a mild solid-state sulfonation procedure.
Simona Zuppolini, Anna Borriello, Marina Pellegrino, Vincenzo Venditto, Luigi Ambrosio, Luigi Nicolais   +5 more
doaj   +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

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

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

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

Oxygen, water and sodium chloride transport in Soft Contact Lenses Materials [PDF]

, 2016
[EN] Oxygen permeability, diffusion coefficient of the sodium ions and water flux and permeability in different conventional hydrogel (Hy) and silicone-hydrogel (Si-Hy) contact lenses have been measured experimentally.
Compañ Moreno, Vicente, Gavara, Rafael
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

Preparation of an Intelligent pH Film Based on Biodegradable Polymers for Monitoring the Food Quality and Reducing the Microbial Contaminants

Bioinorganic Chemistry and Applications, 2022
Hydrogel refers to a three-dimensional cross-linked polymeric network made of synthetic or natural polymers that can hold water in its porous structure.
Kumaran Subramanian, Deivasigamani Balaraman, Kumaravel Kaliyaperumal, V. Devi Rajeswari, K. Balakrishnan, P. Ronald Ross, Elumalai Perumal, Pugazhvendan Sampath Renuga, Mani Panangal, Y. Swarnalatha, S. Velmurugan   +10 more
doaj   +1 more source

Air bubble-induced intraocular lens opacification in hydrophobic intraocular lens following posttraumatic cataract surgery: A first-ever case report

TNOA Journal of Ophthalmic Science and Research, 2017
A 19 year old male presented with complaints of diminution of vision in right eye. He had undergone cataract surgery in right eye elsewhere 6 years ago for firecracker injury. On examination, eccentric pupil is noticed with intraocular lens (IOL) opacity.
G V Prabhakar, J K Reddy, Shadab Khan
doaj   +1 more source