ViewLight UNICOS UDR-800P - Schober Test for Heterophoria; Schober Heterophoria Procedure

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10.17 Worth For Dots Test (Worth 4 dots)
 Purpose: Find out repression Subjective test. You can check out whether there is any
internal/external Heterophoria.
 Chart: Worth 4 Dot Chart
 Auxiliary Lens: Red Filter for right eye, and Green Filter for left eye.
 Target: Check up as how many the dots are seen. In normal case, it is 4.
 Way of Test
1. On Special Chart clause of touch screen, press Worth 4 Dot Chart to enter the
Repression Test Mode.
2. Question the patient how many lights he sees.
▶ If he says 4 dots, the patient’s fusion is normal.
▶ If he says 2 red dots, the patient is using right eye only, and the Respression is
occurring in his left eye.
▶ If he says 3 green dots, the patient is using left eye only, and the Respression is
occurring in his right eye.
▶ If he sees 5 dots, it is Diplophia. If the red dot is right side of the green dot, the
patient has internal Strabismus/internal Heterophoria, while the red dot on the left
side of the green dot, he has external Strabismus/external Heterophoria.
▶ While he sees 5 dots and 3 dots and 2 dots appears continuously alternately, it is
an Alternate Repression of right/left eyes.
[Figure 10-17] Repression Test