Surfactant-free HEMA crystal colloidal paint for structural color contact lens

2016 ◽  
Vol 4 (31) ◽  
pp. 5222-5227 ◽  
Author(s):  
Panmiao Liu ◽  
Zhuoying Xie ◽  
Fuyin Zheng ◽  
Yuanjin Zhao ◽  
Zhongze Gu
Keyword(s):  
Methyl Methacrylate ◽  
Contact Lens ◽  
Contact Lenses ◽  
Structural Color ◽  
Hydroxyethyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
New Type

A new type of structural color paint was fabricated by dispersing poly(methyl methacrylate-hydroxyethyl methacrylate) (PMH) nanoparticles in 2-hydroxyethyl methacrylate (HEMA) solvent without additional surfactants. The paints then were directly cast to form structural color contact lenses by UV polymerization in moulds.

Ablation of poly(methyl methacrylate) and poly(2-hydroxyethyl methacrylate) by 308, 222 and 193 nm excimer-laser radiation

1995 ◽  
Vol 60 (3) ◽  
pp. 261-270 ◽  
Author(s):  
A. Costela ◽  
J. M. Figuera ◽  
F. Florido ◽  
I. Garc�a-Moreno ◽  
E. P. Collar ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Methyl Methacrylate ◽  
Excimer Laser ◽  
Hydroxyethyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
Excimer Laser Radiation ◽  
193 Nm

scholarly journals Characterization of nanophotonic soft contact lenses based on poly (2-hydroxyethyl methacrylate) and fullerene

2013 ◽  
Vol 67 (6) ◽  
pp. 861-870 ◽  
Author(s):  
Aleksandra Debeljkovic ◽  
Lidija Matija ◽  
Djuro Koruga
Keyword(s):  
Contact Lens ◽  
Near Infrared ◽  
Contact Lenses ◽  
Base Material ◽  
Optical Power ◽  
Sem Analysis ◽  
Hydroxyethyl Methacrylate ◽  
Soft Contact ◽  
Soft Contact Lenses ◽  
Soft Contact Lens

This work presents comparative research of characteristics of a basic and new nanophotonic material, the latter of which was obtained by incorporation fullerene, C60, in the base material for soft contact lenses. The basic (SL38) and nanophotonic materials (SL38-A) for soft contact lenses were obtained by radical polymerization of 2-hydroxyethyl methacrylate and 2-hydroxyethyl methacrylate and fullerene, which were derived by the technology in the production lab of the company Soleko (Milan, Italy). The materials were used for production of soft contact lenses in the company Optix (Belgrade, Serbia) for the purposes of this research. Fullerene was used due to its apsorption transmission characteristics in ultraviolet, visible and near infrared spectrum. For the purposes of material characterization for potential application as soft contact lenses, network parameters were calculated and SEM analysis of the materials was performed while the optical properties of the soft contact lenses were measured by a Rotlex device. The values of the diffusion exponent, n, close to 0.5 indicated Fick's kinetics corresponding to diffusion. The investigated hydrogels could be classified as nonporous hydrogels. With Rotlex device, values of optical power and map of defects were showed. The obtained values of optical power and map of defects showed that the optical power of synthesized nanophotonic soft contact lens is identical to the nominal value while this was not the case for the basic lens. Also, the quality of the nanophotonic soft contact lens is better than the basic soft contact lens. Hence, it is possible to synthesize new nanophotonic soft contact lenses of desired optical characteristics, implying possibilities for their application in this field.

Mechanical properties of the soft contact lens of poly(methyl methacrylate-N-vinylpyrrolidone)

1980 ◽  
Vol 14 (5) ◽  
pp. 557-566 ◽  
Author(s):  
S. Hosaka ◽  
A. Yamada ◽  
H. Tanzawa ◽  
T. Momose ◽  
H. Magatani ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Methyl Methacrylate ◽  
Contact Lens ◽  
Soft Contact ◽  
Poly Methyl Methacrylate ◽  
Soft Contact Lens

Youth Views on Sustainability: PMMA, from plexiglass window to a packaging for an implantable glucose sensor

2015 ◽  
Vol 37 (3) ◽  
Author(s):  
Elke Van De Walle
Keyword(s):  
Methyl Methacrylate ◽  
Medical Devices ◽  
Glucose Sensor ◽  
Contact Lenses ◽  
Poly Methyl Methacrylate

The unique versatility of polymers allows them to be manufactured into both commonly used house-hold items and specialised medical devices. ‘Plastic’ windows and contact lenses form one such example, as both are manufactured from the same material, called poly(methyl methacrylate), or PMMA.

Sign in / Sign up

Export Citation Format

Share Document