Can contact lenses cause headaches? Refractive errors can cause several symptoms such as double vision, eye strain and squinting. One of the most common reasons for the pain is eye strain. When you're in front of a computer, or if you're wearing the wrong prescription, your eyes can struggle to see clearly. One thing you can do is eye exercises. they can help with eye comfort, especially if your eyes get irritated at work. Three ways to do eye exercises such as focus change, near and far focus and figure eight. Focus change works by challenging your focus. Another focus exercise should be done from a seated position holding your thumb about 10 inches from your face and focus on it for 15 seconds. Last, Figure eight is picking a point on the floor about 10 feet in front of you and focus on it. and trace an imaginary figure eight with your eyes. For our eyes!