Kindle Stand recently came across an article that discussed at length the likelihood of developing eyestrain from reading ebooks on ereaders. The author weighed electronic ink against back-lit LCDs and concluded that neither technology is likely to cause eyestrain. Rather, he suggests, how you read may have the greatest effect on your eyes.
The Free Dictionary includes “…prolonged reading of small print” among the causes of eyestrain. If that alone is enough to tire your eyes and give you headaches, then the risk of developing eyestrain from ebooks is likely to be equivalent to the risk from reading books or working at a computer. However, the finding that people read more once they acquire Kindles suggests ereaders may increase the incidence of eyestrain among reading enthusiasts after all.