What does 'set eye on' mean?

[joseph_angelov]

What does 'to set eye on s.o.' mean?
thanks, joseph

[Englishlanguage]

I guess it means to see someone or something which may be interesting for you.
If you set eyes on a girl, you have seen that girl and you believe she's nice and could be interesting for you.
Take a look at this link.
P.s: I'm not a teacher nor a native speaker.