6 Operating
bon CP-50
GA bon CP-50 Rev 1.0 E 271205
12/21
6.2 Special features
Taste Bezeichnung
Funktion
Astigmatic fan test
Test for astigmatism. Determines the astigmatism with the
fogging test.
Red/green test
Monocular spherical fine adjustment. Adjustment is
complete when the red and green sections are the same.
Bichrome balance
test
Binocular spherical fine adjustment with polarisation filters.
One eye sees the fields on the right and the left and the
other sees the fields at the top and bottom.
Worth test
Heterophoria and dominance test With red/green filters the
white field is registered in both eyes (fusion).
The coloured fields are registered in one eye.
Schober test
Red/green filters to determine heterophoria.
Note: The results may be slightly falsified by the chromatic
aberration.
Refraction
balance test
Checking the refraction balance with polarisation filters.
Both eyes only register one line.
Heterophoria test
with fix point
Polarisation filters to determine heterophoria.
Vertical and horizontal lines are seen monocularly. The fix
point is binokular.
Heterophoria test
Polarisation filters to determine heterophoria. Vertical and
horizontal lines are seen monocularly.
Aniseikonia test
vertical
Test with polarisation filters in a vertical direction to see if
both retinal images are the same size.
Aniseikonia test
horizontal
Test with polarisation filters in a horizontal direction to see if
both retinal images are the same size.
Stereo test
Test to determine the stereo threshold with polarisation
filters. The diagonal retinal disparity of the column pairs is
30, 100, 400 and 800 angular speed.
Cross cylinder test
Tests the degree of existing night myopia.
Night myopia test
Tests the degree of existing night myopia.
Dissociation test
Test for dissociation.
Astigmatismus-Test
(Punkteraster)
Ascertainment the
astigmatism
at cross cylinder method.
