Anyone who actively uses their eyes for long periods of time in order to drive, use a computer, or scroll through apps on their phone, is at risk. Performing these activities in very bright or dim light can also make symptoms worse. But unlike what your mother might have told you, eye strain is a temporary and harmless condition.
Stress, fatigue, and poor posture can contribute to eye strain. Windy conditions or exposure to fans, heating, and air conditioning systems are also contributors.
Most importantly, tiredness, blurring, and other symptoms may indicate undiagnosed nearsightedness or farsightedness, or another condition such as dry eye.