Transitions, Reactions, Photochromic or Reactolight Lenses
New supplies and chemistry involved within the latest generations on the lenses have created substantial development in addressing the 2 fundamental criteria for choice :
More mature generations (and a few existing generations) keep a yellow or slightly jaundiced hue even if not exposed to ultra violet light-weight (indoors by way of example). The most recent era Transitions are widely regarded to become the very best available and nearly entirely very clear within the absence of extremely violet.
Most newer photochromatic lenses make a speedy transition from light-weight to dim as they are exposed to extremely violet - the actual test and also the differentiation may be the rate at which they regress from the darkest tint to clear. Once more Transitions lenses are broadly regarded as greatest at school in this regard.
Transitions lenses certainly are a extensively held trademark for a specific (newest) technology of supplies and technologies which are mixed and sold under the "Transitions" brand. Other (but equivalent) names will not be precisely the same, and are normally regarded to become not as excellent, as they're from older generation photochromatic technology.
Finally - never anticipate your photochromatic lenses (regardless of which brand name or technologies) to create considerably of the distinction while driving, because the windscreen of the car is created to absorb most of the UV before it enters the cabin - therefore the lenses within your glasses have practically nothing to react with. In case you want or would like tinted lenses although driving, you happen to be much better off getting two pairs on the very same body with prescription obvious and prescription tinted lenses.