Figure 2

Kaplan–Meier survival plot of glaucoma progression of study population as stratified by percentage reduction of intraocular pressure (IOP). The upper-half group included those with percentage reduction of IOP > 20.9%, and the upper-quartile group included those with percentage reduction of IOP > 31.0%. The cumulative probabilities of non-progression in the upper-half group (solid line) and the lower-half group (dotted line) were significantly different (P = 0.019) (A), and the cumulative probabilities of non-progression in the upper-quartile group (solid line) and the lower-reduction group (dotted line) were significantly different as well (P = 0.048) (B).