Now, as for some neurological thing at work here, the numbness you felt is normal from an injury
to the face that causes a black eye
, so a neuro is not who you need to see. I personally think you ought to visit an eye specialist, to find out how come you still have this black eye, so he can stop the origin of the discoloration. By the way, Vitamin K is good for clotting blood, you can get it from dark green leafy vegetables.