The Twelve blue light blocking glasses are an absolute must-have for anyone who spends a significant amount of time in front of computers. Based on my observations, these glasses have significantly reduced my eye strain and even helped me fall asleep easier after a long day of work. The rectangular frames are stylish and comfortable, making them perfect for extended wear. The only con is that they ARE non-prescription, so if you already have glasses, you`ll need to choose between the two. OveralSee full review