🔬 How true is this?
ColourDichromat and colour-blind views use the Machado et al. (2009) simulation matrices — the standard in vision-accessibility research. The card's spectrum strip is that exact math applied to a pure hue ramp.
AcuityPublished Snellen ratios (20/75, 20/1200…) are mapped to optical blur; raptor sharpness is an unsharp mask. The relative differences are real, the absolute look is illustrative.
Light sensitivityNight-adapted eyes lift shadows with a soft highlight roll-off. A display can't actually be 100× brighter, so this shows the effect of sensitivity, not the photon count.
Extra sensesThermal, UV glow, polarization, echolocation, electroreception and magnetoreception are false-colour illustrations — ordinary photographs contain no heat, UV, or sound data. Each science card says so.
Field of viewThe dial shows real published degrees. The 3-D view approximates wide fields with lens distortion, since a flat screen can't wrap 330° around your head.
Flicker fusionFast-eyed animals (fusion ≥75 Hz — dogs, chickens, flies, bees…) see the Neon billboards strobe here, slowed enormously: their real rates outrun your monitor.
BehaviourMotion-vision (frog/fly), independent eyes (chameleon), and the air/water split (anableps) model how those visual systems work, tuned to the published behavioural findings in each card.