The above photo does not depict the new lenses described below
I just came across amazing nanotechnology which allows a network of nano-sized tunnels throughout contact lenses to be filled with dyes which respond to ultraviolet radiation and darkening when it senses such rays. The resulting product could be extremely helpful to users as they will protect the eyes without the need to fumble and look for sunglasses. The challenge as I see it is how willing people will be to put nanotech into their eyes.
But then again, if we can wear contacts which have colored tints, why not those with UV-sensitive dyes?
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Wow! I could go for a pair of those. Transition lenses could also help reduce sun-damage to those with lighter colored eyes. Cataracts and possibly melanoma of the eye could become more rare.