Because we can see, the naïve assumption has always been that sight is somehow accomplished through known electrochemical neuronal processing. This is faith, not science. Examining the biomechanical details involved reveals that real-time vision processing simply is not physically possible. Sight is just the tip of the iceberg.
The fundamental problem is that our brain doesn’t work in real-time. The brain actually works rather slow. Information that the brain receives from the eye is already out of date by the time it gets to the visual cortex. ~ Gerrit Maus
If human brains are too slow for visual processing, the pathways and processing power for insect vision, and especially color sight at night, are woefully inadequate. The matterist explanation for vision is not credible.
You might think that vision is easily accomplished because cameras capture images, but the processes are quite different. Photography involves cumulative deposition of photons onto a photo-reactive chemical substrate; a relatively simple operation thousands of times slower than sight. And single-lens cameras are nothing like compound eyes.