why are my eyes sore
Sore eyes can be caused by a variety of things. In most cases they are caused by staring at a computer screen or book for too long. Your eyes may become sore after a long day at work or if you have been deprived of sleep. An incorrect eyeglass prescription may also lead to sore eyes. Additional causes may include: Airborne irritants such as chemicals, smoke, smog, animal dander, and pollen.
One common cause of sore eyes is conjunctivitis (or pink eye), but the problem can also be caused by an infection, allergies, too much sun exposure, eye fatigue, or contact lens wear.