amount of HIV Virus

does somebody knows the ''amount'' of hiv virus that can possibly infect a person through the eyes? I know it was a low risk however what happened to some people in the medical field being infected through the eyes?

Say a very very tiny drop of semen gets in to ur eyes after ejaculation, and semen is HIV infected, what are the chances of getting infected?  would it need a large amount of semen that can possibly infect the person if it goes thru the eyes?  or it does not matter, large amount of semen or small amount, u can still be at risk.?  because i read some of the doctors here that its a risk for semen hiv positive that gets into the eyes...

[dj606]

it's not low risk it is no risk you have a better chance of being hit by lightning