1. Center PR. Tablet ownership over time. http://www.pewinternet.org/2014/01/16/e-reading-rises-as-device-ownership-jumps/e-readers4/2014
2. Agarwal S, Goel D, Sharma A (2013) Evaluation of the factors which contribute to the ocular complaints in computer users. J Clin Diagn Res 7(2):331–335
3. Council TV. screens, phones, tables and more: keeping your eyes safe in a digital age
4. Blehm C, Vishnu S, Khattak A et al (2005) Computer vision syndrome: a review. Surv Ophthalmol 50(3):253–262
5. Sheedy JE (1992) Vision problems at video display terminals: a survey of optometrists. J Am Optom Assoc 63(10):687–692