Nathaniel Kleitman was an American physiologist and sleep researcher who served as Professor Emeritus in Physiology at the University of Chicago. He is recognized as the father of modern sleep research, and is the author of the seminal 1939 book Sleep and Wakefulness.
Square frames in a rich tortoise shell hue with subtle curves and a clear saddle bridge. If you like glasses that wrap, this frame has you in mind.
I wear these most of the day; every day. Can’t go without them anymore!
I have both day and night time blockers. I love the style and I’ve noticed a difference in my sleep and less headaches.
Have really helped me wind down in the evening and keep my energy flowing through the day, less headaches and more productive
Love the design. Love the benefits. I've been using the Nate Day glasses for a couple weeks now, while working remotely at home on computers and phones... and I gotta say, these glasses make a significant difference in eye strain and vision acuity at the end of my work day. I've also been sleeping better at night... whether or not that's attributable to the glasses is still TBD. But overall, I'm very happy with this purchase.
My eyes just feel so much better and less tired. The color was unusual at first but I quickly adapted to it.
Protect Your Health
Finding yourself inside, staring at screens day and night? You need to protect your health from the damaging effects of all that artificial blue light. Ra Optics glasses are scientifically-proven to block 95-100% of artificial blue light, saving you from poor sleep, eyestrain, headaches, and feeling fatigued.
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Why Ra Optics
For years I searched for a treatment that would heal - not mask - my underlying health issues. What I uncovered changed everything about the way I thought about light, sleep and my health. Keep reading to learn how Ra Optics’ Blue Light Blocking Glasses have made all the difference.
What makes our glasses so effective?
We started with science then made it stylish. Our glasses have been developed with leaders of photoscience, neuroscience, and optics. They are infused with pigments that have been tested and retested for effectiveness. We personally know they work, but many leaders in health and fitness can attest to that too.