Fig. 1
From: Corneal permeability changes in dry eye disease: an observational study
Average fluorescein concentration in dry eye patients. Legend: Fig. 1 depicts the increase in corneal peak fluorescein concentrations (ng/ml) from baseline at 5, 10, 15, and 30 min time intervals for dry eye disease and normal patients. The top line with diamond markers represents dry eye disease patients, and the bottom line with square markers represents normal patients. Error bars represent the 95 % confidence interval. Fluorescein concentrations converged towards its baseline as time elapsed, but were still statistically different from its baseline at 30 min (p < 0.01)