183
TEST METHOD
Binocular Visual Function Test
4
4.4.12 Horizontal coincidence test
Use: To detect aniseikonia and to correct horizontal phoria
Chart: Horizontal coincidence
Applicable model: CP series P and F/SC series P/SC-1600Pola G+
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)
Ideal appearance:
Right eye
Left eye
Binocular vision
(No vertical coincidence, Orthophoria)
Aniseikoia detection
1
Present the horizontal coincidence chart.
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 in/out prism powers can be entered.
2
Ask the patient, “Can you see a square with a dot in the center? Are the top and bottom
frames the same size? Or, is one smaller than the other?”
Ex.)
3.5% aniseikonia
The width of a line corresponds to 3.5% aniseikonia
The “Top and bottom equal?” message appears. Test result (Yes or No) can be selected with a cor-
responding function button and print it with the other data.
When the aniseikonia is due to anisometropia (refractive power difference of 2.00 D or more
between the right and left eyes), a spectacle lens prescription is suitable for axial
anisometropia and contact lens one is suitable for refractive anisometropia.
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Содержание RT-5100
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Страница 46: ...28 BEFORE USE Getting Started and Exiting 161221687130 承認済 Uncontrolled copy when printed ...
Страница 226: ...208 TEST METHOD Visual Acuity Test by ETDRS chart 161221687130 承認済 Uncontrolled copy when printed ...
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