Excellent product. I could feel the difference after wearing this eye glasses and spent almost 6 hour time in front of computer. I have been suffering from eye strain, eye burning and red eye for past one and half year. I visited doctor several time and gone tests, there is no problem with eye vision and they used to prescribe some eye drops for relief. I have spent almost 6 to 7 hours today in-front of computer by wearing these eye glasses, I have no issues of eye strain, eye burning. Thank you Zebriana for providing Quality product at affordable price