MEDIZS Smart DR13, Руководство по эксплуатации

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10-17. Phoria Test with Fixation
- Purpose: Operate Heterophoria test in a way of Pola Cross with
Fixation during subjective test.
- Chart: Polarized Cross with Fixation
- Auxiliary Lens: Polarized filter with 134 degrees (for right eye), and
45 degrees (for left eye)
- Objective: The cross on the right upper side in 2 directions seen with
the right eye and the cross on the left lower side in 2
directions seen with the left eye are united and seen as
one.
- Operation sequence
1. Press Pola Cross chart with Fixation to enter
Heterophoria test mode.
2. Ask the patient, “Does it seem like a cross?”
- If the answer is “Yes”, there is no Heterophoria. Test done.
- If the answer is “No”, it is Heterophoria. Go on the next test.
3. Start with horizontal Heterophoria. Ask the patient as following.
4. Does the “ㄴ” shape located on the left side of the “ㄱ” shape,
or the right side of it?
- Located on left: “Exophoria”. Turn the dial counterclockwise to
increase BI prism. When the cross is seen well, finish the test.
- Located on right: “Esophoria”. Turn the dial clockwise to
increase BO prism. When the cross is seen well, finish the test.
5. After horizontal Heterophoria test, start with vertical
Heterophoria. Ask the patient as following.
6. Does the “ㄴ” shape located upside of the “ㄱ” shape, or
downside of it?
- Located upside: “Left Hyperphoria”. Turn the dial clockwise to
increase BU prism. When the cross is seen well, finish the test.