My eyes are brown ,why do they turn black?

Question

when i get so mad, my brown eyes turn black,this has always happened and i was wondering why.

Answer 1

Well,  I do not know what it is but mine do the same i have generally brown eyes with green cresents on the bottom,  that alone is weird.  But when i get mad and am ready to fight or just lose it,  the iris (not the white part) turns blood red sometimes into black.  my body tempature rises and i get the feeling of not being able to control myself.  i know i have hypertension stage 1  and at 25 thats not good.  so i wish i could help but im looking for similiar answers.  Oh and being able to pick up a dumpster i have pics of that.