Dear Tonye, thanks for your comments. Your glasses have the blue light blocking function. Our blue light blocking lenses are added with anti-reflective coating on both front and back surfaces. So it has an anti-reflective coating on the lens that blocks blue light which is a kind of blue coating. Moreover, we understand that choosing a perfect frame size online can be tough sometimes so we suggest that you could please check this link https://www.firmoo.com/help-p-1.shtml for reference. But don't worry, we offer a 30-day return&exchange and 3 months warranty service, please click here for details. Our CSR will reach out to you via email within 24 to 48 hours. Please check your inbox or spam mail. Thank you and stay safe!