Video See-Through

A type of head-mounted display architecture where the user perceives the real world through camera feeds displayed on screens inside the headset, rather than looking directly through transparent lenses. Video see-through systems like the Apple Vision Pro capture the environment via onboard cameras and render it on internal displays, allowing digital content to be tightly integrated with the physical scene. This approach enables high-fidelity visual augmentation — overlays can be precisely aligned with real-world objects. For assistive technology, VST offers advantages in visual enhancement (modifying colour, contrast, and highlighting objects) but introduces trade-offs including latency, reduced direct visual access, and the inability to modify the pass-through feed directly on most current devices. VST contrasts with optical see-through systems where the user looks through transparent lenses with overlaid holograms.