Computer eye strain (eye fatigue, computer vision syndrome) has also been associated with blue light emitted by digital display devices. Computer eye strain is a big problem if you are blue light sensitive and you need to stare at screens a lot (my case). Moreover, emerging research suggests that there are other longer term health hazards, e.g. retina damage, sleep disorder, depression, etc. Blue light filters are a possible solution to blue light induced computer eye strain. This post attempts to answer the following questions: How does blue light cause computer eye strain? What blue light filter options are there? How effectively do they filter blue light? Where can you get them?