This is an inverse of the other image - that is, a single white pixel in the middle of a black field.
If you perform the same distance viewing test as for the other, you'll find that you can discern the single white pixel far, far beyond where you can discern the single black pixel. That's because the eye (and any other imaging device) can discern point sources of light far smaller than its smallest angular resolution. How an imaging system responds to a point source is called the point spread function.
This is why we can see individual stars up to thousands of light years away and potentially farther - their angular size is absurdly small, but they're so bright we can see them.