After trying eInk screens and back lit screens I assumed that the eInk caused less eye strain, but it seems that like so many times before, I may have been wrong. A NY Times Bits Blog post recently covered this topic and it seems that I cannot blame my back lit monitor for my deteriorating vision any more than I can blame my car for my cardiovascular health.
Apple’s iPad with a full-color LCD display.E Ink has a very low contrast ratio. Although it can offer an excellent reading experience in bright sunlight, the screens can become uncomfortable to use in dark settings because of the lack of contrast and backlighting on the screen.
LCD screens, meanwhile, have long struggled to offer good viewing angles for reading. Apple’s latest IPS LCD screens include extremely wide viewing angles, but the reflective glass on the screen could be a hindrance in brightly lit situations.
Professor Alan Hedge, director of the Human Factors and Ergonomics Laboratory at Cornell University, said that reducing eye fatigue is less a matter of choosing a specific display than of taking short breaks from looking at the screen.
When we read, Dr. Hedge explained, a series of ocular muscles jump around and can cause strain, regardless of whether we are looking at pixels or paper. “While you’re reading, your eyes make about 10,000 movements an hour. It’s important to take a step back every 20 minutes and let your eyes rest,” he said.
Honestly, who can take a break from reading after only 20 minutes? That's inhuman.