In Norway we are not fully satisfied with the results obtained in our chronic open-angle glaucoma treatment. This may be due to the fact that 80% to 90% of our "primary" open-angle glaucomas also exhibit exfoliation syndrome ("pseudoexfoliation of the lens capsule").1-3As suggested by Vogt,4this type of glaucoma may be called glaucoma capsulare. It is usually classified as a secondary glaucoma, as exfoliative substance has been demonstrated in the intratrabecular spaces, probably interfering with the drainage of aqueous humor causing rise in intraocular pressure.5,6A difference in trabecular meshwork pigmentation is found between primary open-angle glaucoma and glaucoma capsulare eyes, the latter being more heavily pigmented.7,8A recent study by Tarkkanen9indicates that a difference also may exist in prognosis. It is well known that the incidence of exfoliation syndrome in patients with "primary" open-angle glaucoma is reported differently in different countries; ranging