Bilge Karga Ashilla Black Yellow Circadian Rhythm Glasses

Hello, the purpose of the model is to help maintain circadian balance. The main purpose of our yellow lens models is to prevent digital eye fatigue and increase concentration. We recommend wearing these models throughout the day while you're in front of a screen, or in the evening when you're under artificial light. All our products are UV400 protection, suitable for both indoor and outdoor (including car use) However, to fully benefit from the features of the eyeglass lens, you may prefer it especially during intense screen usage. Thank you for your interest.