It is impossible to say without an exam of your eyes. The cornea can develop endothelial failure, with fluid blisters on the surface. If these blisters break open, then there is pain and the sensation of something being in the eye. Also, calcium deposits can develop on the cornea (band keratopathy); these calcium deposits can flake off, with the same symptoms. See your ophthalmologist as soon as you can. There are treatments for these problems, which will make you more comfortable.