[Blue Light Blocking Glasses]

Nate Sleep

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.

Fit: Medium

For prescription eyeglass orders, please ensure that your prescription includes a pupillary distance (PD), is not expired, and has a power range of +2.00 to -6.00 spheres and up to -2.00 cylinder. Otherwise, your order may be substantially delayed or we may cancel and refund your order.
All glasses orders include a luxury branded case and cleaning cloth, and free U.S. shipping, returns, and exchanges.

Customer Reviews

Based on 11 reviews
A. Bmore
Nate Sleep Makes for Great Sleep!

These glasses are awesome, and after a few weeks wearing them consistently after the sun goes down, I have noticed an improvement in my sleep pattern. I can also tell a huge difference in eye strain when looking at any screens with these glasses on, especially after the sun goes down. You can purchase these glasses with confidence, you won't be disappointed!

Tobias Kurz
Best BLB Glasses on the Market!

I´ve tried a number of BLBs before deciding to give reoptics the chance (as I´m from Germany, tax and shipping is about half the price, what makes them kinda expensive for me) and I wish I did it earlier!

Lost my first glasses on vacation after using them almost 2 years and immediatley felt thr difference - the week until I received the package with the new order was really difficult for me and remembered me of the days before using a good BLB (real problems iwth getting to sleep every night).

Happy with the new Nate Sleep Glasses - even better than the model I bought 2 years ago (not the glasses, but the quality of the product itself and its design really upgraded in the time between).


I ordered the Popp Screen for work as my work environment calls for me to work indoors in front of screens and stark fluorescent lights all day. In addition, I ordered the Fritz Sleep Glasses; I was falling asleep as soon as I put them on at night; fell asleep within 10-15 minutes of putting them on. I noticed the next day that I had no interruptions while sleeping at night, and I felt well rested. I would definitely recommend this to anybody; it will benefit them greatly! Thanks Matt and the entire RA Optics team for your hard work and dedication!

Ian Cuthbertson
love them

feels like im sitting next to a campfire instead of a TV or harsh blue lights. wearing them every night now!

Maura Kennedy

Nate Sleep


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.


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.