[Headache and the eye]

The contribution of ophthalmology in the diagnostic evaluation of a patient with headache is outlined. When asthenopia or an organic eye disease is cause of the headache, the ophthalmologist cannot only diagnose the etiology but can also cure the patient by adequate therapy. When the headache is sign of CNS-disease, the ophthalmologist can provide the neurologist with valuable information regarding nature and localization of the process.