A refraction is a test done by your eye doctor to determine if glasses will make you see better and what your prescription is.

The charges for a refraction are covered by some insurances but not by all.

For example, Medicare does not cover...

The tears that coat the surface of your eyes have both a liquid and a mucous layer to them. It is normal to have a small amount of mucus in your tear film. But that mucus can significantly increase when the eye gets irritated.

Some of the most...