What to do if my eye infection keeps coming back?

Remove the offending. Agent. If you're female, and use makeup, the most common source of bacterial infection is mascara. So you must make sure to remove all your eye make up each night, and throw away your mascara after three months, no matter how expensive it is. If it's from contact lens wear, you need to not keep them in overnight while you're wearing mascara, as the particles can get under the lens. Watch what goes into your eye, or touches it.
Not infection? A recurring problem in the eye may suggest that you do not have an infection, but some other chronic problem. It is a little unusual to have recurring infections in your age group, unless you are in a high risk group. See your eye MD for a definitive diagnosis. .