Migraine and low-tension glaucoma. A case-control study.

The authors administered a standardized headache questionnaire to 54 patients with low-tension glaucoma, 182 patients with primary open-angle glaucoma, 126 patients with ocular hypertension, and 493 normal subjects. Patients with low-tension glaucoma had headaches with or without features of migraine (unilateral headache, nausea or vomiting, or visual prodromata) more frequently than did any of the other groups. The higher prevalence of headache in low-tension glaucoma patients, who were usually elderly, was especially striking when their age was considered, since headaches are less common in elderly normal subjects than in young normal subjects. Headaches were present in 86% of elderly low-tension glaucoma patients (70 yr of age or older) but in only 64% of elderly normal subjects (P = 0.04) and only 59% of elderly ocular hypertensive patients (P = 0.02). Because migraine is an ischemic disorder, its possible association with low-tension glaucoma has etiologic and therapeutic implications.