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TEST METHOD
Binocular Visual Function Test
4
4.4.11 Vertical coincidence test
Use: To detect aniseikonia and to correct vertical phoria
Chart: Vertical coincidence
Applicable model: CP series T, U, P, F, ISO, and M / SSC-330 (300) T and U / SC series G, G+, T, M,
and P
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 vertical 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.)
2
Ask the patient, “Can you see a square with a dot in the center? Are the left and right
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 “Sides equal?” message appears. The test result (Yes or No) can be selected with a corre-
sponding 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 left and right 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 ...
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