Cartographers of North Korea (2019)

Mapping the Unseen: How a VR Game Turned My Amblyopia Therapy into a Daily Quest Cartographers of North Korea once mapped the hidden borders of a nation with no official charts, turning curiosity into a map. That same spirit of exploration now guides a new vision‑training tool: AmblyoPunch. I stumbled on it while searching for a way to make my lazy‑eye exercises feel less like a chore and more like a game I’d actually want to play. I was diagnosed with moderate amblyopia in my right eye in my early twenties. The standard prescription — patch the strong eye for hours a day — felt like a punishment. Compliance dropped, and the visual‑acuity gains stalled. When a friend posted a short clip of a Meta Quest experience where you punch floating “Gabor coins” and dodge red spikes, the idea of a dichoptic, game‑first approach clicked. I bought a Quest 2, downloaded AmblyoPunch from the Meta store, and set the lazy‑eye selector to “Right,” severity to “Moderate,” and strabismus type to “Exotropia.” The app’s automatic four‑stage pipeline took over from there. Under the hood: dichoptic rendering on Quest AmblyoPunch is a native Quest application (Unity + OpenXR). The core trick is presenting two slightly different scenes — one per eye — without the user noticing the split. The left‑eye camera renders full contrast; the right‑eye camera receives a dimmed, washed‑out version in Stage 2, then gradually brightens across Stage 3. This is done by rendering two off‑screen textures at 72 fps, each fed to its respective display panel. The Gabor‑pattern coins are signed‑distance‑field gradients at random angles, a classic vision‑science stimulus that drives cortical contrast and orientation selectivity. Because Quest’s fixed‑foveated rendering already splits the view, the extra per‑eye color‑grade pass adds