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5. OPERATION FOR TESTS
The following items are automatically changed as shown below.
2 Check if the patient has heterophoria.
The image the patient sees is separated vertically because of the prism inserted over the
right eye. The patient sees the upper section with the left eye and the lower section with
the right eye.
If the patient does not have heterophoria, the characters on the upper and lower sec-
tions appear aligned.
If the patient has horizontal phoria, the characters of the upper and lower sections are
disassociated in the horizontal direction.
3 Measure the horizontal phoria value.
If the patient has horizontal phoria, measure its degree.
Ask the patient which direction the upper character line is disassociated against in rela-
tion to the lower character line, right or left.
When the upper character line is disassociated to the right, click the left mouse button
for the mouse navigation until the upper and lower character lines appear aligned.
When the upper character line is disassociated to the left, click the right mouse button
for the mouse navigation until the upper and lower character lines appear aligned.
Item Description
Test eye
Changed to the binocular mode. The left eye is the object of
the mouse operation.
Auxiliary lens
The base-up prism of "6 prism" is set
to the right eye.
(The left illustrations are the status as
seen from the operator side as the
CV-5000 software screen.)
Mouse operation
mode
The mode to operate "Horizontal prism" is set.
Mouse Navigation
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