Daroff, R B Ocular causes of headache. [electronic resource] - Headache Oct 1998 - 661 p. digital Publication Type: Editorial ISSN: 0017-8748 Standard No.: 10.1046/j.1526-4610.1998.3809661.x doi Subjects--Topical Terms: Glaucoma, Angle-Closure--complicationsHeadache--etiologyHumans