Left eye (LE) is covered and right eye (RE) is observed for movement that would indicate a heterotropia; no movement of the RE in this case. Cover is removed from the LE; some practitioners advise that the LE should now be observed for any heterophoria recovery movement. We advocate that the cover-uncover test should only be used to assess for heterotropia in the uncovered eye and that alternating cover test should be used for heterophoria detection. The RE is now covered and the LE observed for any heterotropia movement; there is none. The cover is removed from the RE and reintroduced to the RE to begin the alternating cover test.