Why does the perceived intensity of a light source diminish more slowly than predicted by the inverse square law when viewed peripherally?

💡 Explanation

Peripheral vision relies on retinal summation, where multiple photoreceptors converge onto a single ganglion cell, therefore increasing sensitivity to weak signals at the cost of spatial resolution. This mechanism compensates for reduced light levels and receptor density in the periphery, rather than changes in the pupil size or cortical magnification that affect the central vision.

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