Grey lenses maintain natural colours and offer good protection in all weathers.
Block blue light. Glasses with yellow lenses distort colours but enhance contrast, depth perception and visual acuity. Good for fog or low-light conditions, and often used by drivers.
Brown or Orange
Distort colours but enhance contrast and offer all-round protection.
Slightly in creases contrast. Dark green lenses are best for precision sports. Light green are only have cosmetic value.
Blue or Mauve
Glasses with blue or mauve lenses provide good protection in moderate sunlight conditions.
Pink or Red
These offer an alternative look for evening / low light conditions.
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