Many photons are coming into the eye at once, in the square centimeter of area. If you are only half the distance away from the moon (120,000 miles), then you will be receiving four times the amount of photons than usual. Or, if you have eight eyes instead of two while on Earth, the effect will be the same. More light will make the image appear larger, brighter, and closer. I suppose if one had an eye the same size as Earth, then one would be able to see from the Earth what one would see with the human eye, while standing on the moon.
Most images we see appear to be two dimensional. If we were to look at one photon, then it would be a singular pinpoint of light, in other words, no dimensional. It wouldn't be a perfect point, but it would become more precise as the freqency or energy increased, right? One photon can not depict the image of the moon perfectly, but then again, neither can all of the photons which come off of it.
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