NightFall Blue Blocking Glasses feature a red lens that blocks both blue and green light. These glasses are ideal for evening use to support natural circadian rhythms and help you wind down for a restful night’s sleep.
 
These optical-grade red lenses block 100% of blue and green light from 400nm to 550nm, precisely the range most associated with disrupting natural circadian rhythms and nighttime light sensitivity. This makes them ideal for evening use when winding down and preparing for rest.
 
Nocturnal 550 Red Lens:
Filters 100% of blue and green light from 400nm–550nm
Premium, stylish frames with durable spring hinges
Impact- and scratch-resistant lenses
Includes foldable carry case and lens cloth
Designed to support evening use by reducing exposure to blue and green light wavelengths linked to melatonin suppression
Use after sunset under artificial light to support your natural evening rhythm