Transitions® lenses are completely clear inside and instantly darken outside. The Transitions® photochromic molecules are embedded inside the lense coating and recalibrate their structure when in contact with UV light. This change in molecules structure is what causes the lens to darken to an optimal darkness based on UV intensity.
Intensity of darkenes that could be as low as 45% and as high 87%.
Speed of conversion from clear to dark that can be as fast as one minute or as long as six minutes.
Residual color or the basic lens color when the photochromic material is not activated, that could be as low as 2% or as high 30%.
Gives you more contrast, better acuity and tend to be clearer indoors.
They are known for their good color balance and do better with contrast when compared with gray. These lenses will do well as an all-purpose lens, driving, playing tennis or golf and with variable light conditions.
Best for brighter light conditions as it provides the most shading. Pick Transitions® XtraActive if this is the most important attribute for you. They work better as Transitions® sunglasses but tend to leave more tint indoors.
Transitions® lenses have the best performance and tend to cost more than other photochromic brands.
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