6 doctors weighed in:
What are the best eyeglass lenses that change to dark shade ?
6 doctors weighed in

Dr. Barbara Evans
Ophthalmology
2 doctors agree
In brief: Transitions
My personal favorite is transitions xtraactive which is one of the few photochromic lenses to actually darken in the car. Most lenses that darken automatically are activated by ultraviolet light and need to be directly expsed to uv light in order to activate/darken.
The transition xtraactive lenses have a slight tint indoors but will darken in the car as well as outdoors.

In brief: Transitions
My personal favorite is transitions xtraactive which is one of the few photochromic lenses to actually darken in the car. Most lenses that darken automatically are activated by ultraviolet light and need to be directly expsed to uv light in order to activate/darken.
The transition xtraactive lenses have a slight tint indoors but will darken in the car as well as outdoors.
Dr. Barbara Evans
Dr. Barbara Evans
Thank
Dr. MANOHAR CHENCHUGALLA
Family Medicine
2 doctors agree
In brief: Photochromic lenses
Check info in this website below.
http://www.viziooptic.com/eyeglass-prescription-lenses/introduction-to-color-changing-eyeglass-lenses-transition-lenses-photochromic-lenses.aspx.

In brief: Photochromic lenses
Check info in this website below.
http://www.viziooptic.com/eyeglass-prescription-lenses/introduction-to-color-changing-eyeglass-lenses-transition-lenses-photochromic-lenses.aspx.
Dr. MANOHAR CHENCHUGALLA
Dr. MANOHAR CHENCHUGALLA
Thank
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