VIP Assessment Continued And VIP Therapy Flashcards
Comitancy testing
Red lens test
Subjective test that involves dissociating the two eyes by placing a red lens in front of one eye (one sees red and the other see the white light). The patient is asked to describe the relative position of the red light and white light in all 9 directions of gaze
Red lens test
Comitancy testing
Red lens test
Hess Lancaster
Most selective test for comitancy
Hess Lancaster
Materials for hess Lancaster
Grid, RG glasses, and RG wands
Purpose of hess Lancaster measure the relative postuions for all 9 directions of gaze
Red sees red and green sees green
Hess Lancaster
Differentiates an anatomical muscle restriction from a cranial nerve palsy
Forced duction
How to do forced duction
- the patient looks in the direction of restriction-forceps are used to grasp the conjunctiva and move the eye in that direction
- positive: does not move in the direction=anatomical restriction
- negative: eye can be moved=muscle palsy
Subjective angle=0, objective angle-angle of anomaly
Harmonious ARC
- the patient will not have symptoms of diplopia or confusion
- this is the most common type of ARC
Most common type of ARC
Harmonious
Most common type of ARC
Harmonious
Unharmonous ARC
Angle of anomaly < objective angle; subjective angle does not equal objective or 0 (somewhere in between)
-the patient will have diplopia and confusion because there is not perfect correspondence (may not see this clinically)
Paradoxical ARC
- type 1: subjective angle > objective angle
- type 2: subjective angle is in the opposite direction of the objective angle. Examples: ET has temporal ARC rather than the expected nasal
- both types will have diplopia and confusion worse than if the patient had NRC
Covariance
Type of correspondence shifts depending on which eye is fixating (often show harmonious ARC when the normal eye is fixating while NRC used when the strab eye is fixating)
What is the most commonly used cognitive test for psychoeducational evaluations
Weschesker intelligence scale for children IV