Researchers in China have used artificial tissue to restore erectile function in pigs, a promising development for repairing penile damage in humans.
Biochemistry
Jan 4, 2023
0
4
Femtosecond pulsed lasers—which emit light in ultrafast bursts lasting a millionth of a billionth of a second—are powerful tools used in a range of applications from medicine and manufacturing, to sensing and precision ...
Optics & Photonics
Nov 16, 2022
1
251
Researchers have created new materials that are very stretchable and extremely tough.
Materials Science
Feb 21, 2022
0
725
Inside your body, cell movement plays a crucial role in many significant biological processes, including wound healing, immune responses and the potential spread of cancer.
Biochemistry
Apr 19, 2021
0
17
Imagine seeing the world in muted shades—gray sky, gray grass. Some people with color blindness see everything this way, though most can't see specific colors. Tinted glasses can help, but they can't be used to correct ...
Bio & Medicine
Mar 3, 2021
1
400
Inspired by the color-changing skin of cuttlefish, octopuses and squids, Rutgers engineers have created a 3-D-printed smart gel that changes shape when exposed to light, becomes "artificial muscle" and may lead to new military ...
Materials Science
Jan 5, 2021
0
808
Researchers have developed an ultrathin pressure sensor that can be attached directly to the skin and measure how fingers interact with objects to produce useful data for medical and technological applications. The sensor ...
Nanophysics
Nov 19, 2020
0
44
The eyes of many insects, including the fruit fly, are covered by a thin, transparent coating made up of tiny protuberances with anti-reflective, anti-adhesive properties. An article published in the journal Nature reveals ...
Nanomaterials
Sep 16, 2020
0
44
New biomaterials developed at the University of Bayreuth eliminate risk of infection and facilitate healing processes. A research team led by Prof. Dr. Thomas Scheibel has succeeded in combining these material properties ...
Materials Science
Aug 28, 2020
1
289
Researchers have incorporated ultra-thin optical devices known as metasurfaces into off-the-shelf contact lenses to correct deuteranomaly, a form of red-green color blindness. The new customizable contact lens could offer ...
Optics & Photonics
Mar 4, 2020
2
333
A contact lens (also known simply as a contact) is a corrective, cosmetic, or therapeutic lens usually placed on the cornea of the eye. Modern soft contact lenses were invented by the Czech chemist Otto Wichterle and his assistant Drahoslav Lím, who also invented the first gel used for their production.
Contact lens usually serve the same corrective purpose as glasses, but are lightweight and virtually invisible—many commercial lenses are tinted a faint blue to make them more visible when immersed in cleaning and storage solutions. Some cosmetic lenses are deliberately colored to alter the appearance of the eye.
It has been estimated that 125 million people use contact lenses worldwide (2%), including 28 to 38 million in the United States and 13 million in Japan. The types of lenses used and prescribed vary markedly between countries, with rigid lenses accounting for over 20% of currently-prescribed lenses in Japan, Netherlands and Germany but less than 5% in Scandinavia.
People choose to wear contact lenses for many reasons, often due to their appearance and practicality. When compared to spectacles, contact lenses are less affected by wet weather, do not steam up, and provide a wider field of vision. They are more suitable for a number of sporting activities. Additionally, ophthalmological conditions such as keratoconus and aniseikonia may not be accurately corrected with glasses.
This text uses material from Wikipedia, licensed under CC BY-SA
