Sleepaid Red Merritt Blue Blocking Glasses

SleepAidMax Red filters 99.7% of blue and green light between 380 and 580nm, measured by Micro-Light Optics against ISO 12312-1 and ANSI Z80.3. That wider range — reaching into green as well as blue — is what separates it from the orange SleepAid lens, and it's why the tint is deeper: a Category 2 filter at 22.2% visible light transmission.

This is a lens for the last hour or two before bed, not for the working day. If you want something for evening screens that still lets you see colour normally, SleepAid Orange is the better choice. Evening light suppresses melatonin, and lenses like these reduce that suppression.

That's the best-supported finding in this field; what it means for any individual's sleep is less settled, and our science page publishes both sides of it along with the full lab data. Not for night driving — at 22.2% visible light transmission, this lens is well under the 75% minimum required after dark