The sunglasses are to see everything in a darker tone. So if we use sunglasses the inverted (and I don't mean simply to get around them) then we would see things more clearly. But this does not mean that we have night vision, but it is a way to combat seasonal affective disorder (TAD or DI) also called winter depression.
There are people who are happy in summer, spring and autumn, but with the arrival of the winter is extremely sad because the days become shorter (there are more presence of dark colors) and everything becomes colder. While it is a problem that apparently affects a small part of the population, it is a medical problem to the end and all.
An effective solution is to use Sequinetic lenses which are similar to the sunglasses, but rather than prevent the arrival of light to our eyes, they allow more light among already equipped with six very bright LEDs.
Apparently, people with TAD only need to use these lenses half an hour per day to boost morale. Once more technology put on the side of our health.
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