173
TEST METHOD
Binocular Visual Function Test
4
4.4.6
Mallet test (vertical phoria)
Use: To detect heterophoria by giving stimuli for fusion
Chart: Mallet (horizontal bars)
Applicable model: CP-770PhM, SC series PhM
Auxiliary lens: Right eye 135°, left eye 45°, polarizing filters, binocular rotary prism
(SC-2000, SC-1600: Red filter on the right eye, green filter on the left eye, binocular rotary prism)
Ideal appearance:
:
Right eye
Left eye
Binocular vision (Orthophoria)
(Orthophoria)
[Procedure example]
1
Present the Mallet chart (horizontal bars).
Press
.
The polarizing filters are placed in the measuring windows. (The red and green filters are
placed for the SC-2000, SC-1600.)
The base up/down prism powers can be entered.
2
Patient focuses on the center X.
3
Ask the patient, “Can you see the two horizontal bars?”
Yes
Go to the next step.
No
The test cannot be continued.
4
Ask the patient, “Do the horizontal bars line up?”
Yes
Orthophoria (No hyperphoria nor hypophoria)
No
Hyperphoria or hypophoria– Go to the next step.
5
Ask the patient, “Is the right bar shifted to the up or down?”
Up
Left eye hyperphoria: Turn the dial clockwise until the two bars line up.
(Add BU to the right eye and BD to the Left eye.)
Down
Right eye hyperphoria: Turn the dial counterclockwise until the two bars line up.
(Add BD to the right eye and BU to the Left eye.)
• The rotary prism lenses are removed from the measuring windows when the already
selected button is pressed again in prism mode.
ex.When
is pressed in the base in/out prism, the rotary prism lenses are removed.
• Use
or
instead of the dial for fine adjustment.
• When the prism power is added, the prism power can be added in 0.5 D increments by
adding the prism power for single-eye compared to both eyes.
Dial 1.0
0.5
,
0.2
0.1
161221687130 承認済
Uncontrolled copy when printed.
Summary of Contents for RT-5100
Page 12: ...X 161221687130 承認済 Uncontrolled copy when printed ...
Page 18: ... XVI 161221687130 承認済 Uncontrolled copy when printed ...
Page 46: ...28 BEFORE USE Getting Started and Exiting 161221687130 承認済 Uncontrolled copy when printed ...
Page 274: ...256 MAINTENANCE List of Replacement Parts 161221687130 承認済 Uncontrolled copy when printed ...
Page 302: ...284 EMC ELECTROMAGNETIC COMPATIBILITY 161221687130 承認済 Uncontrolled copy when printed ...