Final answer:
Globe lag is not explicitly defined in the provided information but is generally associated with abnormal ocular motility, as seen in thyroid eye disease, where one eye lags in movement behind the other, often noticed during upward gaze. Conditions like internuclear ophthalmoplegia can result in diplopia or double vision due to failed conjugate gaze.
Step-by-step explanation:
An eye assessment finding known as a "globe lag" often refers to a discrepancy in eye movement, where one eye does not move in synchronization with the other. While the provided text does not explicitly define globe lag, it does describe a related condition known as internuclear ophthalmoplegia (INO), where failure of one eye to abduct while the other adducts results in diplopia or double vision. This is a failure in conjugate gaze, where the eyes do not point at the same point in space, which is imperative for clear vision. Globe lag may be indicative of abnormalities in ocular motility such as thyroid eye disease, where the affected eye appears to lag behind the movement of the other eye when looking upward. Testing eye movement, looking for conjugate movements, and assessing the visual field can help in diagnosing eye disorders and ensuring proper function of the extraocular muscles and optic nerve.