Q: If you were shrunk to microscopic size would you be able to see normally? Would you be able to see microscopic things?
But, assuming you could scale a person down, does having smaller eyes necessarily mean you can see smaller – even microscopic — objects? Assuming your tiny eyes are the same shape and material as your present eyes (and they always appear to be in the movies), they should work normally. If there’s a cell or Lego brick in front of you and about your size, it will appear to be about your size. The amount of light bouncing off of tiny things, or flying into tiny eyes, is small. So tiny eyes are always in the dark.