Table 1.

Comparison of the nine gaze-direction measurements with the Hess screen test and the new objective OMD. The Hess screen test cannot be used for evaluating patients with suppression because the grid is displayed in one eye and the target is displayed in the other eye under red–green dichoptic separation (2). gaze-direction measuring device

Hess screen test
-3.1±1.6°	-2.7±1.3°	-2.1±0.9°
-2.9±1.3°	-3.3±1.7°	-2.7±1.6°
-3.0±1.7°	-2.4±1.3°	-2.2±1.3°
OMD
-4.7±2.0°	-5.2±1.7°	-5.0±1.3°
-4.9±1.3°	-5.1±1.7°	-5.1±1.8°
-5.0±1.9°	-4.6±1.5°	-4.5±2.0°