Differences in IOP between different tonometers and Goldmann Applanation Tonometry (GAT). Pooled estimates and summary 95% limits of agreement11-45 .
| 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 = Non-Contact Tonometer; ORA = Ocular Response Analyzer; RT = Rebound Tonometer.