TIJN Blue Light Blocking Computer Glasses Horn Rimmed Eyeglasses,Anti Glare Fatigue Blocking Headaches Eye Strain Lens width: 56mm, Lens height:43mm,Bridge:17mm, Arm:135mm Lightweight eyeglasses for superior comfort,only 0.99OZ Combine sleek metal with stud accents and bold acetate in this browline frame Semi-rimless frame features a flattering square shape with gold metallic nose bridge The fluid combination of retro style, and unique flair crafts a distinctive look that is suitable for both men and women Too much blue light exposure will cause eye strain, blurred vision, and headaches. According to recent studies, too much blue light exposure can even lead to permanent eye damage and vision loss. Now that we are using more digital devices at home and work, its important to protect our eyes as much as possible. Injury the structure of macular, will cause eye strain and blurred vision, even lead to permanent eye damage and vision loss. Cause visual fatigue, affect your learning and working efficiency Cause poor sleeping quality or even hardly can fall asleep