O’VISTA is a vision-based cognitive assessment platform that orchestrates standardized oculomotor tasks (prosaccade, antisaccade, pupillary light reflex), captures eye movements via camera, and applies AI analysis to produce clinician-ready reports. A dual-use deployment architecture supports ruggedized optics for defense (vigilance/fatigue monitoring, HUD/C4ISR interoperability) and browser-based clinic setups, with privacy-first data handling (k-anonymity, noise injection, grid bucketing).This disclosure provides enough implementation detail to establish prior art (two-screen orchestration, timing-resolved events, session analytics, privacy-preserving export layer) while excluding trade secrets (model parameters, thresholds, internal heuristics, unreleased code).Purpose: defensive publication to protect freedom-to-operate; no clinical or diagnostic claims. O’VISTA; eye tracking; antisaccade; prosaccade; pupillary light reflex; cognitive assessment; dual-use; privacy; k-anonymity; C4ISR; HUD; clinical operations