Yes it can. For me it was a gray dot and got worse.
AS FOR ME SMALL BLACK DOTS.
I HAVE THREE.
KITT
Yes, I have one small black dot, that my Neuro and eye doctor said is remnants of my long ago bout with Optic Neuritis.
Heather
Thanks, you guys are always so helpful. I just had my eyes examined in January (w/no problems found) but maybe I should call for another appointment. It happened when I became extremely numb on whole face and both arms.
Stacey
I have ON and I get a black spot in my central vision, but it does not stay.
I noticed a spot today that was gray.
I also get some sort of weird pattern of dots.
It is worse on the days when I did not get enough sleep the night before.
LA
I have a black dot that flares in my right eye... shows up as a black spot sometimes, and sometimes it looks like when you've stared at the sun too long.