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. 2019 Aug 3;25:391–399.

Table 2. Evaluation of the consistency between the Tonopen and the TonoVet measurement in COHT monkey models.

Tonometers IOP 7–16 mmHg
(n=13 readings)
IOP 17–22 mmHg
(n=22 readings)
IOP 23–60 mmHg
(n=37 readings)
Tonopen TonoVet Tonopen TonoVet Tonopen TonoVet
Mean ± SD
14.15
18.62
19.23
24.18
29.3
43.05
 
± 1.14
± 1.98
± 1.31
± 3.62
± 6.12
± 14.29
Range
12-16
16 - 21
17 - 22
19 - 34
23 - 47
22 - 71
Δ Mean ± SD
4.46±1.66
 
4.95±3.57
 
13.76±9.19
Δ Range
1-7
0 - 15
-32
95% CI
3.46 - 5.47
3.37 - 6.54
10.69 - 16.82
Δ > ±5 mmHg*
23.08%
36.36%
75.68%
P 0
0
0.003

Δ Mean ± SD: mean and standard deviation of difference (TonoVet minus Tonopen) * IOP difference bigger than ± 5 mmHg