indicating that aging reduces the ability to see UV wavelengths. Some people can see much more of the UV light spectrum, however. Up until the 1980s, cataract surgery involved removing the cloudy ...

The electromagnetic spectrum has many types of light waves. It includes radio waves, microwaves, infrared light, visible light, ultraviolet, X-rays, and gamma rays. Each type of light has a different ...

Light exists on an electromagnetic spectrum of wavelengths that are measured in nanometers. Those between 200 and 400 nanometers constitute the invisible spectrum, which includes the ultraviolet ...

Shorter wavelength energy includes ultraviolet ... fairly evenly across a wide range of the visible spectrum. LEDs and other electric light sources are not quite as uniform across the spectrum ...

As the U.S. continues to wait for newer sunscreen ingredients, patients should use tinted sunscreens to protect against visible light that causes photodamage, melasma and hyperpigmentation, according ...