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Intermittent Exotropia Office Control Score
- Observe the child for 30 seconds when fixating at distance and then again when fixing at near object
- If no deviation noted place occluder over right eye for 10 seconds, repeat by occluding the left eye with distance fixation.
- Occlude for another 10 seconds the eye that took the longest to re-fuse.
- Repeat with near fixation.
- Record the worst level of control noted
- This test should be done before any dissociation or patching or at least 10 minutes after any dissociation.
| Scale Score | Description |
| 5 | Constant Exotropia |
| 4 | Exotropia >50% of the 30 second observation |
| 3 | Exotropia <50% of the 30 second observation |
| 2 | No Exotropia unless dissociated and recovers < 5 seconds |
| 1 | No Exotropia unless dissociated, recovers in < 1 second (phoria) |