Vestibular asthenopia, analogous to visual asthenopia, is a sensory (or sensory-motor) discomfort consisting of a set of subjective symptoms, the expression of which is essentially visual and whose origin is a transient vestibular incident. It can be considered the result of a sudden global central disorder, such as a "computer glitch," following a chain of events in response to an initial vestibular disease, even minor and devoid of clinical signs. This disorder results in inadequate processing and imperfect integration of afferent visual and vestibular input, leading to ocular fatigue, pain associated with eye movement, and sensitivity to retinal slip.
Bauwens, A., & Larock, F. (2021). Vestibular asthenopia. Journal français d’ophtalmologie, 44(10), 1560-1565. https://doi.org/10.1016/j.jfo.2021.05.008 (Original work published 2021)