Transitions, Reactions, Photochromic or Reactolight Lenses
New components and chemistry concerned in the most recent generations in the lenses have produced substantial development in addressing the two basic conditions for selection :
More mature generations (and some present generations) keep a yellow or somewhat jaundiced hue even if not uncovered to ultra violet light (indoors for instance). The newest generation Transitions are broadly regarded to be the top accessible and almost completely distinct inside the absence of ultra violet.
Most newer photochromatic lenses create a speedy changeover from light to dim as they may be exposed to ultra violet - the genuine test along with the differentiation is the price at which they regress in the darkest tint to distinct. Once again Transitions lenses are broadly thought to be ideal in school in this regard.
Transitions lenses really are a broadly held trademark to get a specific (newest) generation of supplies and technologies which can be combined and offered under the "Transitions" brand. Other (but related) names aren't the same, and are typically regarded to be not as great, as they're from more mature technology photochromatic technology.
Lastly - never count on your photochromatic lenses (irrespective of which model or technologies) to produce considerably of the distinction while driving, because the windscreen of the vehicle is developed to absorb most of the UV prior to it enters the cabin - hence the lenses in your glasses have practically nothing to respond with. In the event you need to have or would really like tinted lenses while driving, you're greater off acquiring two pairs in the exact same frame with prescription obvious and prescription tinted lenses.