But safety tests by scientists working for Boots at the firm's laboratory in Nottingham suggest that tinted lenses can block out certain colours and adversely affect vision. The team found that a ...

The eye is most sensitive to wavelengths in the region of 555nm which lie in the yellow-green portion of the spectrum. Tinted lenses (or filters) are usually employed to protect the eye against ...

Some optometrists offer private tests which can help see which colour filter would benefit you the most. These are lenses tinted to a precise colour that aims to help reduce visual discomfort. They ...

This means even clear lenses can block UV rays as effectively as dark ones. Darker tints, however, are better for cutting glare and improving comfort in bright conditions. Tints filter light in ...