i agree with Amy - and have done the same. on a somewhat similar note when hayden was first born -she had lots of eye boogers - so my lactation nurse said to wipe her eyes with breast milk. weird. but i agree with Amy here!
Blake had one too....flushing it is good but what we did was I washed my hands really really well and took the side of my knuckle of my index finger and gently touched her lens. Don't rub it just briefly touch and remove. Odds are if it is a fiber or a hair it will attach to your knuckle. If it doesn't then don't mess with it. You should see it move around when she blinks if it is a fiber. If it is a fiber you don't want to rub it anyways because it could scratch her cornea. So...if that doesn't work I would try flushing it (if she cooperates) and then as a last resort call your ped.
Maybe try flushing it while giving him a bath?