I have a light visor (which I haven't needed yet this fall/winter), but I used it for 2 yrs for seasonal depression.
It is UV free, and only uses a green/blue light. It is much handier than a light box, and easier to control.
http://www.feelbrightlight.com/studies.html
I really like this way of getting light. I only needed 1/2 hour a day first thing in the morning. Without it I was sleeping way too much in winter. I have a thread on it at PN somewhere if you search me there.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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