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Optifine blue light blocking glasses is a solution Almost of us are staring in computer screen or smart phone for long time. Side-effects from our digital lives include eye strain, blurred vision, trouble sleeping, dry eyes, etc Optifine Glasses, Anti Blue Light Expert ANTI-BLUE LIGHT, REDUCE EYE FATIGUE — Blue light from computer screen, smartphone, TV, etc in our digital lives. Optifine blue light blocking glasses block over 97% hurmful blue rays, reduce eye strain, anti eye fatigue RELIEVE HEADACHES, IMPROVE SLEEP — Wear Optifine blue blocking glasses, relieve headaches, improve work efficiency, reduce trouble sleeping, ensure us enjoy a restful sleep SUIT FOR MEDIUM SMALL FACE — Flexible material bring cute looks, suitable for women and men, light weight, comfortable fit, super durability, the glasses suit for medium small face FDA CERTIFICATION STANDARD — Optifine blue blocker glasses are produced based on customized prescription eyeglasses standard. Accurate reading glasses magnifaction strength offer better vision, see more clear EXCELLENT CUSTOMER SERVICE — 100% satisfaction guarantee. Enjoy two weeks to try out Optifine glasses, if you have any issue, please contact with us in priority, We promise exchange or refund No risk to buy now!