Evaluation of Nystagmus Examination Using Wearable AR Glasses in Vertigo Patients

Inclusion Criteria: * Adults ≥18 years with vertigo/dizziness suggestive of a central or peripheral vestibular disorder. * Able to complete both AR-based and conventional oculomotor testing during the same visit (with \~30-minute washout). * Provide written informed consent. * Adequate vision for eye-tracking and calibration (e.g., corrected visual acuity ≥20/40 in each eye). * Willing and able to return for the follow-up visit. Exclusion Criteria: * Use of vestibular-suppressant medications within 24 hours prior to testing (e.g., benzodiazepines, antihistamines, anticholinergics). * Ocular conditions that would interfere with reliable eye tracking (e.g., corrected visual acuity \<20/40, dense cataract, severe ptosis/strabismus, active ocular infection/inflammation). * History of photosensitive epilepsy or seizure disorder triggered by visual stimuli. * Severe motion sickness/cybersickness or inability to tolerate the AR headset. * Significant cognitive impairment or psychiatric condition precluding informed consent or protocol compliance. * Pregnant or breastfeeding (per investigator judgment and IRB policy). * Any other condition that, in the investigator's opinion, would make participation unsafe or confound study results.