I had a very painful problem with these. My eye doctor said the insides of my kids were encrusted with them. He did remove them in his office.  This was a great relief but I kept getting more,  was having to get them removed every month or two. He said he believed it was related to general inflammation in the body.   After I  permanently  changed to an anti inflammatory diet (I started with Dr Joel Fuhrman's  nutritarian diet) I gradually had less and less deposits, and fewer procedures needed. Now some years later, I rarely get these.  Hoping this might help others with this problem.