L.,
I had lasik eye surgery and had extremely dry eyes. In addition to putting plugs in the tear ducks to try to keep any moisture in, I started taking flaxseed - I would use already milled for a small one. It's easily added to oatmeal or many types of food - applesauce, oatmeal, mac & cheese, etc. It doesn't change the flavor much. The main benefit has been a huge change from extreme dry eyes that felt like sandpaper was in them to rarely noticing the dry eyes. You can google and find out the many benefits. Several people I know are taking it for lower cholesterol (it's similar to an organic substitute for fatty omega fish oils), and no one has mentioned any side effects. Check with your pediatrician and make sure it's ok for a two year old, but my child is younger and she's had it in a smoothie.