Visual field progression differences between normal-tension and exfoliative high-tension glaucoma.

Purpose: To compare the pattern, location, and rate of visual field (VF) change in normal-tension (NTG) and exfoliative high-tension glaucoma (XHTG).

Methods: Records of all patients with glaucoma in the New York Glaucoma Progression Study with five or more VF tests were reviewed. Patients were divided into NTG (all known IOP < 21 mm Hg) and XHTG (untreated IOP >or= 21 mm Hg) groups.