Reference to original study: Krupin T, Liebmann JM, Greenfield DS, Ritch R, Gardiner S, Low-Pressure Glaucoma Study G. A randomized trial of brimonidine versus timolol in preserving visual function: results from the Low-Pressure Glaucoma Treatment Study. Am J Ophthalmol. 2011;151(4):671–681.

Fig. 1
figure 1

The Low-Pressure Glaucoma Treatment Study (LoGTS) showed that brimonidine better preserves visual field compared to timolol in a subset of open-angle normal tension glaucoma patients. IOP intraocular pressure, POAG primary open angle glaucoma, CI confidence interval, GCPM glaucoma change probability maps.