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Table 8 Maximum Daytime Pressures Measured within Different Intervals of Maximum Nighttime Pressures

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

Nighttime elevation above daytime peak pressure (mmHg)

Per cent of daytime IOP < than indicated level in column 1 (%)

Per cent of daytime OPP < than indicated level in column 1 (%)

Control

NTG

POAG

Control

NTG

POAG

≤0

51.9

44.8

38.9

53.7

47.8

40.7

+1

24.1

26.9

20.4

9.3

1.5

14.8

+2

9.3

16.4

33.3

14.8

13.4

11.1

+3

11.1

7.5

3.7

13

14.9

13

+4

1.9

4.8

3.7

5.6

11.9

7.4

≥5

1.9

0

0

3.7

10.4

13.0

  1. Data are expressed as percentage
  2. IOP intraocular pressure, OPP ocular perfusion pressure, NTG normal tension glaucoma, POAG primary open-angle glaucoma