Computer vision syndrome is a combination of eyestrain and body postural stress that is experienced with prolonged computer use and other near vision tasks. This can affect people of all ages. Prolonged periods of reading, computer or other near work can cause the eye muscles to strain, leading to sore, tired eyes, headaches, blurred vision, eye dryness and reduced work efficiency. Symptoms often get worse if left untreated. This can affect learning potential for school students, and affects visual performance of people working in offices. Treatment includes support lenses and vision therapy.