Fig. 1From: Short-term reproducibility of intraocular pressure and ocular perfusion pressure measurements in Chinese volunteers and glaucoma patientsDiurnal Curves of the 3 groups. The diurnal IOP (a) and diurnal OPP curves (b) were plotted according to the IOP and OPP data at each time point. IOPs and OPPs changed with time and showed a typical circadian rhythm. The peak IOPs did not occur at same time points over the 2 days in the normal volunteers or glaucoma patients. The peak OPPs occurred at same time points (24:00) only in the POAG patientsBack to article page