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INDICATION OF CHART
FIXATION DISPARITY TEST (POL. CROSS WITH FIXATION TARGET)
Refer to "FIXATION DISPARITY TEST (POL. CROSS WITH FIXATION TARGET)" in the CV-5000
instruction manual for details of the test method.
Set the red and green lenses on the instrument, which are the auxiliary lenses, to the right and left eyes
respectively and then perform the test.
PHORIA TEST (CROSS RING)
Refer to "PHORIA TEST (CROSS RING)" in the CV-5000 instruction manual for details of the test
method.
Set the red and green lenses on the instrument, which are the auxiliary lenses, to the right and left eyes
respectively and then perform the test.
1
Check if the patient has heterophoria.
When the patient sees the test chart through the R/G auxiliary lenses, only the cross is seen with
the right eye and only the ring, with the left eye.
2
Touch the [Prism Simulate] button among the function buttons on the screen to perform the
active chart test.
3
Adjust the patient's vision according to "Dial Navigation" (*when operating through mouse/per-
sonal computer: mouse navigation) until the centers of the cross and ring overlap each other
when he/she sees the chart.
The measured value of this test is not always the same as that of "PHORIA TEST (CROSS RING)
(NORMAL)".
The reason is that fusion stimulus is different between "PHORIA TEST (CROSS RING) (NOR-
MAL)" and "PHORIA TEST (CROSS RING) (ACTIVE CHART)". Use "PHORIA TEST (CROSS
RING) (ACTIVE CHART)" for screening and explanation.
Item
Description
Auxiliary lens
The red lens is set to the right eye and the green
lens, to the left eye.
(The left illustrations are the status as seen from
the operator side as shown on the CV-5000 soft-
ware screen.)
Item
Description
Auxiliary lens
The red lens is set to the right eye and the green
lens, to the left eye.
(The left illustrations are the status as seen from
the operator side as shown on the CV-5000 soft-
ware screen.)