Former contact lens wearer myself, so yes been there, done that, got the t-shirt.
Despite what the style gurus say, I have carpet down in the bathroom so I think it just disappeared into the pile, I did try a brush and pan but probably made things worse.
Whilst fiddling with aforementioned sunglasses, it occured to me, I wonder how many of these screws actually make it out of the factory and how many are lost before then and what does the machine look like that makes them, sometimes my mind wanders.
Don't have any nail varnish, got some superglue though.