Its probably the effect of switching form low intensity gray receptors to normal colour receptors, that don't register the spikes.

With an open iris and higher overall intensity inside the eye by reflections, the signal of the gray level intensity cells are switched off by saturation. In the state of saturation the single photon detection by receptors does not work anymore. This is the effect, that makes is possible to see by starlight only even in the dark of the forest.

Its probably the effect of switching from low intensity gray receptors to normal colour receptors, that don't register the spikes.

With an open iris and higher overall intensity inside the eye by reflections, the signal of the gray level intensity cells are switched off by saturation. In the state of saturation the single photon detection by receptors does not work anymore. This is the effect, that makes is possible to see by starlight only even in the dark of the forest.