When any foreign body enters the eye, close it instantly, and keep it still
until you have an opportunity to ask the assistance of some one; then have
the upper lid folded over a pencil and the exposed surfaces closely
searched; if the body be invisible, catch the everted lid by the lashes,
and drawing it down over the lower lid, suddenly release it, and it will
resume its natural position. Unsuccessful in this attempt, you may be
pretty well assured that the object has become lodged in the tissues, and
will require the assistance of a skilled operator to remove it.