How To Tell The Sex Of A Kitten At 8 Weeks?

(age of the kitten)

I am getting old and my eyes are not as good as they used to be. I cannot tell if this is a boy or girl kitten at 8 weeks, but it has dark brown spots on its body with some white fur around its face. How can i tell? Is there something wrong with it? It looks like he has some hair growing out of his eye though…Thanks!