I assume he had to make it look bad so the refs would stop play so he could fix his contact.
That is more believable. I played bball my entire life, been poked in the eye incidentally probably 3 or 4 times and seen it happen to several other players. Never have I ever seen a player go to the ground solely because of it. Normally the game stops, player holds their head over their eye, blinks it off for 20-30 seconds and play continues.