There are a variety of eye problems that can cause headaches. In some cases, the headache is caused by the person squinting and overworking the eye muscles in an attempt to better focus their vision. In other cases, problems of internal pressure and swelling within the structures of the eye can ‘refer’ pain into other areas of the head.
Difficulties with vision, such as blurring caused by long-sightedness, can be corrected with prescription glasses or contact lenses. Other disorders, such as glaucoma, need to be medically investigated and treated promptly. Once the cause of eyestrain is corrected, the associated headaches should ease.