Table 2.
Descriptive data of the power vector components derived with the IOLMaster700 (upper section), the Anterion (middle section) and the difference in power vector components Anterion − IOLMaster700 (lower section). VEQa/VEQp/VTPEQ refer to the equivalent power for the corneal front surface/corneal back surface/total corneal power, V0a/V0p/VTP0 to the projection of the astigmatism to the 0°/90° meridian for the corneal front surface/corneal back surface/total corneal power and V45a/V45p/VTP45 to the projection of the astigmatism to the 45°/135° meridian for the corneal front surface/corneal back surface/total corneal power respectively. The mean and median values of the differences between both devices are all close to 0, except VEQp and VTPEQ, which show lower values for the Anterion (in bold)
| All data in dpt; N = 854 | VEQa | V0a | V45a | VEQp | V0p | V45p | VTPEQ | VTP0 | VTP45 |
|---|---|---|---|---|---|---|---|---|---|
| IOLMaster700 (Carl-Zeiss-Meditec) | |||||||||
| Mean | 48.6861 | 0.2863 | − 0.0342 | − 6.8039 | − 0.2545 | − 0.0452 | 42.9962 | 0.0375 | − 0.0788 |
| SD | 1.6551 | 1.2105 | 0.6863 | 0.2323 | 0.1630 | 0.1140 | 1.4604 | 1.0943 | 0.6215 |
| Median | 48.6608 | 0.2005 | − 0.0619 | − 0.8057 | − 0.2448 | − 0.0422 | 42.9538 | − 0.0467 | − 0.1034 |
| 2.5% quantile | 45.3823 | − 1.7984 | − 1.2611 | − 6.2856 | − 0.6072 | − 0.2839 | 40.0405 | − 1.8313 | − 1.2266 |
| 97.5% quantile | 52.0275 | 3.0378 | 1.4493 | − 5.3574 | 0.0369 | 0.1686 | 40.9859 | 2.5937 | 1.2403 |
| Anterion (Heidelberg Engineering) | |||||||||
| Mean | 48.6867 | 0.3781 | 0.0160 | − 6.1566 | − 0.2704 | − 0.0044 | 42.6493 | 0.1138 | 0.0118 |
| SD | 1.6336 | 1.1632 | 0.6500 | 0.2414 | 0.1582 | 0.1013 | 1.4414 | 1.0398 | 0.5831 |
| Median | 48.6752 | 0.2976 | 0.0000 | − 6.1553 | − 0.2616 | 0.0000 | 42.6071 | 0.0403 | − 0.0116 |
| 2.5% quantile | 45.4700 | − 1.6141 | − 1.2057 | − 6.6420 | − 0.6078 | − 0.2042 | 39.8077 | − 1.7274 | − 1.0912 |
| 97.5% quantile | 51.9821 | 3.2507 | 1.2989 | − 6.7076 | 0.0102 | 0.1768 | 45.5726 | 2.6765 | 1.2535 |
| Difference Anterion − IOLMaster700 | |||||||||
| mean | 0.0006 | 0.0918 | 0.0502 | − 0.3527 | − 0.0159 | 0.0508 | − 0.3469 | 0.0763 | 0.0903 |
| SD | 0.2623 | 0.3264 | 0.2641 | 0.0648 | 0.0686 | 0.0719 | 0.2689 | 0.3127 | 0.2541 |
| median | 0.0000 | 0.1076 | 0.0688 | − 0.3502 | − 0.0168 | 0.0368 | − 0.3470 | 0.0915 | 0.1024 |
| 2.5% quantile | − 0.5316 | − 0.6334 | − 0.5152 | − 0.4767 | − 0.1384 | − 0.1021 | − 0.8391 | − 0.5919 | − 0.4473 |
| 97.5% quantile | 0.5084 | 0.7377 | 0.5712 | − 0.2303 | 0.1240 | 0.1847 | 0.1309 | 0.6983 | 0.5799 |