Short-term reproducibility of intraocular pressure and ocular perfusion pressure measurements in Chinese volunteers and glaucoma patients

Table 2 Intraclass Correlation Coefficient Estimates of Intraocular Pressure at Each Time Point

Time point		Control			NTG			POAG
Time point	Day 1	Day 2	ICC^a	Day 1	Day 2	ICC^a	Day 1	Day 2	ICC^a
6:00	15.5 ± 2.6	14.8 ± 2.7	0.876	14.6 ± 2.3	13.9 ± 2.3	0.696	29.1 ± 3.1	28.6 ± 2.9	0.744
9:00	14.2 ± 2.5	14.6 ± 2.5	0.815	13.7 ± 2.0	13.8 ± 2.4	0.646	28.5 ± 3.1	28.1 ± 3.0	0.787
12:00	14.9 ± 2.6	15.1 ± 2.6	0.802	14.4 ± 2.1	14.6 ± 2.1	0.694	29.2 ± 3.0	29.1 ± 3.0	0.787
15:00	14.0 ± 2.1	14.0 ± 2.5	0.688	14.0 ± 2.0	13.8 ± 2.1	0.347	28.3 ± 3.1	27.9 ± 2.6	0.752
18:00	14.7 ± 2.2	14.8 ± 2.2	0.736	14.6 ± 2.2	14.4 ± 2.0	0.710	29.2 ± 2.9	28.7 ± 2.4	0.708
21:00	13.1 ± 2.4	13.2 ± 2.3	0.756	13.5 ± 2.5	13.2 ± 2.2	0.762	27.6 ± 3.3	27.3 ± 2.4	0.595
24:00	13.3 ± 2.6	13.3 ± 2.2	0.714	13.0 ± 2.3	13.0 ± 2.4	0.523	27.6 ± 2.7	27.2 ± 3.2	0.656

Data are expressed as mean ± standard deviation
NTG normal tension glaucoma, POAG primary open-angle glaucoma, ICC intraclass correlation coefficient
^aAll ICC measurements, P < 0.001

ISSN: 1471-2415