Tonometry method | Estimated bias | 95% limits of agreement |
---|---|---|

OBF, ocular blood flow; NCT, non-contact tonometer. | ||

*GAT observer 1 was the reference for comparison. | ||

†Difference between methods related to mean of methods. Bias and 95% limits of agreement calculated from linear regression of method differences against method mean. | ||

Tono-Pen (mm Hg) | 0.6 | Bias ±6.5 |

Goldmann observer 2 (mm Hg)† | 1.7–(0.12 × mean) | Bias ±2.6 |

OBF (mm Hg)† | 6.0–(0.35 × mean) | Bias ±5.4 |

NCT (mm Hg)† | 3.6–(0.17 × mean) | Bias ±4.8 |