Yes. Eyestrain headaches may be caused by reading in poor light or reading for long periods without a break. Technically, it's not your eyes you are straining but the muscles around them, which are used for squinting, blinking, or reacting to a glare or dim light. To help prevent eyestrain, read in good light and take a five-minute break at least once an hour, gaze around the room periodically, and change the focus of your eyes from close to long range. See an eye care specialist since you may need corrective lenses or a change in your current lens prescription. Whenever your eyes feel strained, try this exercise: remove any lenses or glasses and turn down the lights or go to a dim room, put your hands over your eyes so your palms block out the light, look into the blackness for 30 seconds, close your eyes again, lower your hands, and open your eyes slowly.