Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.
Tearing that goes beyond a happy or sad moment can stem from a variety of causes, from hay fever to more serious conditions.
Tests and diagnosis
Eye exam — Overview covers definition, what to expect and results of vision testing.
Sept. 19, 2012
- Computers and your eyes. Prevent Blindness America. http://www.preventblindness.org/computers-and-your-eyes. Accessed July 26, 2012.
- Rosenfield M. Computer vision syndrome: A review of ocular causes and potential treatments. Ophthalmic and Physiological Optics. 2011;31:502.
- Eye health tips. National Eye Institute. http://www.nei.nih.gov/healthyeyes/eyehealthtips.asp. Accessed July 26, 2012.
- Computer vision syndrome (CVS). American Optometric Association. http://www.aoa.org/x5374.xml. Accessed July 26, 2012.
- Computer vision syndrome symptoms. American Optometric Association. http://www.aoa.org/x5375.xml. Accessed July 26, 2012.
- Computer workstations. Occupational Safety & Health Administration. http://www.osha.gov/SLTC/etools/computerworkstations/components_monitors.html. Accessed July 26, 2012.
- The effects of video display terminal use on eye health and vision. American Optometric Association. http://www.aoa.org/x5380.xml. Accessed July 26, 2012.
- Computers. Division of Occupational and Health Safety. http://www.ors.od.nih.gov/sr/dohs/HealthAndSafety/Ergonomics/atwork/Pages/ergo_computers.aspx#topSEE. Accessed Aug. 1, 2012.
- Tribley J, et al. Tips for computer vision syndrome relief and prevention. Work. 2011;39:85.
- Yan Z, et al. Computer vision syndrome: A widely spreading but largely unknown epidemic among computer users. Computers in Human Behavior. 2008;24:2026.
- Robertson DM (expert opinion). Mayo Clinic, Rochester, Minn. Aug. 17, 2012.
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