I have a question about my eyes?

Question

My friend says that when i fight (which is a lot, like 1 on one fighting in the street) my eyes go from a lightish dark brown to a really dark (almost black brown) and sometimes to a light hazelish brown. she says more often they get lighter. I've tried to convince her it's a trick of the light, but she says she see's it everytime she fights me, in all types of light, and in different places of the city. Is it like adreniline, or is she just imagining things? She says it creeps her out, so............ just wondering.

Answer 1

you are getting your  anger  out of your system so do not listen to your friend any more because she is seeing things and she wants to talk about your eyes

Answer 2

I dont know what causes it, but some peoples eyes change color with changes in blood pressure like whan youre angry.

Answer 3

When I get angry my partner say may eye colour changes to really dark (like black), he says Im like a shark. And he is being serious when he says this. So your friend is probably right.