OCULUS Binoptometer 4P Instruction Manual page 34

9 Conducting an Examination
Fig. 9-16: Adjust viewing angle
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
Adjust the viewing angle to 0 degrees to complete a distance test.
Patients with multi-focal or progressive lenses: Change the viewing
angle if the test distance is shortened. The selected viewing angle is
displayed in the test menu, see
We recommend that you let the patient adjust the settings, as he/
she can judge best when he/she can see the test pattern well.
Instruction Manual Binoptometer® 4P (G/59860/1016/en)
fig. 9-19, page 32, item 5.