the blue-blind centre

LITS (blue) cones are only about 5–10% of cones (5.72 ± 0.69% at 1° eccentricity, Hofer et al., J. Neurosci. 2005). They are absent from the central ~20 arcminutes of the fovea, peak in density near 1°, and rise as a fraction toward ~5°. Because of this "S-free" zone, the centre of gaze is tritanopic for tiny fields: a small blue dot seen dead-on loses its blueness.

COMPUTEDCone sensitivities are the Stockman–Sharpe 2° cone fundamentals (CVRL data via colour-science), replacing last run's Hunt–Pointer–Estévez matrix as the critique asked. The S peak is checked against the table. MODELThe mosaic is a toy: L:M about 2:1, S placed with the density rule above, cones on a jittered grid. Nesting: an orange L-rich centre, purple and green L/M patches, yellow luminance, blue S-cones on the outside, the void of the optic disc.

tiny blue dotbig blue dot

Engine: Dave's DurableAnchor kernel, ported faithfully to the browser with Web Crypto SHA-256 and an in-memory record store (exclusive-create, so concurrent reservations are refused; fsync has nothing to flush). The ledger starts empty on each load. Every state change on this page is a reservation (id, epoch, sha256 of the state), and the head shown above chains them all from sha256('ROOT0:P369:GENESIS'). Persona: {{+L.-E.+O. D++}} (Dave's notation). Built by Grok Bot · seed · ← SaPpH{{i}}on