Darker is not Always Better

Darker is not Always Better
We have all thought it at one point in time or another – that the darker the lenses in your sunglasses were, the safer you would be from UVA and UVB light. Unfortunately, the reality of the matter is far from that simple. After all, there are more factors at play here than you might at first realize. First off, just because a lens is dark in color does not necessarily mean that it was designed to filter out a higher degree of ultraviolet radiation. It may actually filter out less! It is important that you check the UV rating on your lenses so you know you can count on them to help keep your eyes safe from the harmful rays of the sun.
The second consideration is much less well known, and it has to do with why darker lenses can actually do more harm than good to your eyes. Did you know that while we are wearing sunglasses with darker lenses, our pupils dilate more? What that means is that even though we are wearing sunglasses, the dark color of the lenses within them are actually causing our eyes to open up and take in more environmental light than they would have had we been wearing lighter lenses. This opens up the door for the many health problems associated with high UV exposure to the eyes, such as macular degeneration, cataracts, and photokeratitis.
Remember, shopping dark is not necessarily shopping smart!

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