The vestibulocular reflex is a connection of eye behavior with the balance nerve. The AN tumor usually arises on the balance nerve, and hence can affect the eyes and how we process vision. Positional vertigo is a situation where head turns or other body position can affect balance, spinniness, or dizziness. A patient might be fine until the head is turned a certain way, and then dizziness might occur. For most patients this is a short-duration problem, if it occurs at all, right after surgery.
Gaze stability relates to the ability to keep the eyes fixed stably on a point.
Persons with nystagmus experience a jerkiness that results in the eyes moving on and off target. The next section has some thoughts from patients on related experiences. Some patient thoughts on visual problems Here are some thoughts, experiences and non-medical advice. One woman felt that dizziness and vision improved when she had separate glasses for reading vs. distance, rather than bifocals. This patient reports visual issues as one of the first symptoms.