Medical Management of Glaucoma in the 21st Century from a Canadian Perspective

Table 2

Differences in IOP between different tonometers and Goldmann applanation tonometry [3].

Tonometer	Mean difference between tonometer and GAT	95% confidence interval		95% limits of agreement		% within 2 mmHg
DCT	1.8	+1.3	+2.3	−3.0	+6.6	47
NCT	0.3	−0.1	+0.7	−3.5	+4.0	69
ORA	1.5	+0.9	+2.2	−4.3	+7.3	45
Ocuton S	2.7	−1.2	+6.7	−4.0	+9.6	33
RT-(Icare)	0.9	+0.5	+1.5	−4.3	+6.3	51
TonoPen	0.2	−0.4	+0.9	−5.2	+5.7	52
Transpalpebral	−0.5	−1.3	+0.3	−7.0	+5.9	45

DCT, dynamic contour tonometer; NCT, noncontact tonometer; ORA, ocular response analyzer; RT, rebound tonometer.
Reproduced from [3] with permission from the European Glaucoma Society.