Glaucoma Treatment Study: Visual field loss, improvement comparable through 5 years

Comparable rates of visual field loss and improvement were seen until 5-year follow-up of the Collaborative Initial Glaucoma Treatment Study, at which time visual field loss became more common, according to a study. The prospective, comparative case series study included 607 patients with newly diagnosed open-angle glaucoma from the Collaborative Initial Glaucoma Treatment Study. Researchers obtained baseline and follow-up visual field test results and analyzed the mean deviation change from baseline to follow-up. Changes in mean deviation of 3 decibels or more were considered clinically substantial.