Are your eye lashes thin?  Try coating your eyes and lashes with Cetaphil Moisturizing Creme every night.  Give a few weeks for best results, along with a good nights rest.

To prevent lashes from falling out use a good mascara  that will not make your lashes stiff and brittle.   Avoid rubbing your eyes, it tends to pull and loosen the eye lashes and ultimately fall out.   Just be sure you don’t get the creme in your eyes.