1. Get a comprehensive eye exam. Having routine exams is the most important thing you can do to prevent or treat eye strain problems. 2. Use proper lighting. Eye strain is often caused by harsh interior lighting. Many computer users find their eyes feel better if they can avoid working under overhead florescent tubing. Avoid blue light! 3. Minimize glare. If you wear glasses, purchase lenses with anti-reflective coating. 4. Create a soothing eye mask using tea bags. Tea bags contain tannins that can help constrict vessels, relieving puffy eyes from eye strain. 5. Use over-the-counter artificial tears if your eyes feel dry after reading, knitting, or concentrating for a long period of time.