With any brain injury patient, we are looking very carefully at eye alignment. With the traditional eye exam. you don't really look at eye alignment very carefully. If they're not complaining of double vision, then you don't test out the fine details.
There are techniques whereby you separate the vision from the two eyes. You have one eye seeing a line and one eye seeing a line and you just say, “Tell me when it lines up.” You can measure very accurately what the misalignment is in all kinds of different fields of gaze. We usually measure nine fields of gaze, because it changes in nine fields of gaze.
There are, then, instruments that are simple and easy to use, which any practitioner can use. This might be something that would be good to make standard for your optometrists or your vision specialists who are testing veterans.