You get eyestrain when you look at anything for an extended period of time. Eyestrain might be from driving, reading, or looking at a computer screen for too long. Typically, it doesn't have any long term effects, but it in the short term is can really ruin a day.
Eyestrain is an issue that affects anyone who looks at a computer screen all day. It has plenty of short term symptoms like dry eyes, blurred vision, headaches, and more. Those annoyances are disruptive to your work day, and make it hard to concentrate and be productive.
Although eye strain can be annoying, it usually is not serious and goes away once you rest your eyes. In some cases, signs and symptoms of eye strain are a sign of an underlying eye condition that needs treatment. Although you may not be able to change the nature of your job or all the factors that can cause eye strain, you can take steps to reduce eye strain.
The medical term for eye strain is asthenopia. The symptoms of ocular fatigue, tired eyes, blurring, headaches, and occasionally doubling of the vision are brought on by concentrated use of the eyes for visual tasks. Some people, while concentrating on a visually intense task such as reading fine print, using the computer for hours at a time, or trying to see in the dark, unconsciously clench the muscles of their eyelids, face, temples, and jaws and develop discomfort or pain from use of those muscles. This may lead to a vicious cycle of tensing those muscles further and causing more distress.
n people who already have headaches or blurring of vision due to eye strain, symptoms may be worsened by an underlying eye problem such as an eye muscle imbalance or a need for glasses for the correction of myopia, hyperopia, or astigmatism. In those who already have eye strain, not getting enough sleep, certain medications, being under stress, or being fatigued can also make those symptoms worse.